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13012124887 = 173747835303
BaseRepresentation
bin11000001111001010…
…10100010011010111
31020120211121102200101
430013211110103113
5203122100444022
65551102554531
7640311144106
oct140745242327
936524542611
1013012124887
115578007023
122631898a47
1312c4a587a8
148b620403d
15512549627
hex3079544d7

13012124887 has 32 divisors (see below), whose sum is σ = 14627837952. Its totient is φ = 11519506944.

The previous prime is 13012124861. The next prime is 13012124899. The reversal of 13012124887 is 78842121031.

13012124887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13012124887 - 219 = 13011600599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012124837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2451078 + ... + 2456380.

It is an arithmetic number, because the mean of its divisors is an integer number (457119936).

Almost surely, 213012124887 is an apocalyptic number.

13012124887 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13012124887 is a deficient number, since it is larger than the sum of its proper divisors (1615713065).

13012124887 is a wasteful number, since it uses less digits than its factorization.

13012124887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5487.

The product of its (nonzero) digits is 21504, while the sum is 37.

The spelling of 13012124887 in words is "thirteen billion, twelve million, one hundred twenty-four thousand, eight hundred eighty-seven".

Divisors: 1 17 37 47 83 629 799 1411 1739 3071 3901 5303 29563 52207 66317 90151 144337 196211 249241 440149 2453729 3335587 4237097 7482533 9221917 16285513 20687003 156772589 276853721 351679051 765419111 13012124887