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65468784480 = 253511891271097
BaseRepresentation
bin111100111110001111…
…100101111101100000
320020222122001211201120
4330332033211331200
52033040002100410
650024223132240
74505243325531
oct747617457540
9206878054646
1065468784480
1125846470860
1210831444080
136234761838
143250d02688
151a82908570
hexf3e3e5f60

65468784480 has 384 divisors, whose sum is σ = 229502730240. Its totient is φ = 15555133440.

The previous prime is 65468784431. The next prime is 65468784503. The reversal of 65468784480 is 8448786456.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59679292 + ... + 59680388.

It is an arithmetic number, because the mean of its divisors is an integer number (597663360).

Almost surely, 265468784480 is an apocalyptic number.

65468784480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65468784480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114751365120).

65468784480 is an abundant number, since it is smaller than the sum of its proper divisors (164033945760).

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

65468784480 is a wasteful number, since it uses less digits than its factorization.

65468784480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342 (or 1334 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 60.

It can be divided in two parts, 65468 and 784480, that added together give a palindrome (849948).

The spelling of 65468784480 in words is "sixty-five billion, four hundred sixty-eight million, seven hundred eighty-four thousand, four hundred eighty".