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65140827876 = 22322988370663
BaseRepresentation
bin111100101010101100…
…100010011011100100
320020010202221220211200
4330222230202123210
52031402022443001
645531510002500
74464151621035
oct745254423344
9206122856750
1065140827876
1125698332143
121075b646430
1361b1825b87
14321d532a8c
151a63c26086
hexf2ab226e4

65140827876 has 72 divisors (see below), whose sum is σ = 170534844480. Its totient is φ = 20940825024.

The previous prime is 65140827859. The next prime is 65140827877. The reversal of 65140827876 is 67872804156.

65140827876 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (65140827877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 886521 + ... + 957183.

Almost surely, 265140827876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65140827876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85267422240).

65140827876 is an abundant number, since it is smaller than the sum of its proper divisors (105394016604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65140827876 is a wasteful number, since it uses less digits than its factorization.

65140827876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71585 (or 71580 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 65140827876 in words is "sixty-five billion, one hundred forty million, eight hundred twenty-seven thousand, eight hundred seventy-six".

Divisors: 1 2 3 4 6 9 12 18 29 36 58 87 116 174 261 348 522 883 1044 1766 2649 3532 5298 7947 10596 15894 25607 31788 51214 70663 76821 102428 141326 153642 211989 230463 282652 307284 423978 460926 635967 847956 921852 1271934 2049227 2543868 4098454 6147681 8196908 12295362 18443043 24590724 36886086 62395429 73772172 124790858 187186287 249581716 374372574 561558861 748745148 1123117722 1809467441 2246235444 3618934882 5428402323 7237869764 10856804646 16285206969 21713609292 32570413938 65140827876