13256537364 has 36 divisors (see below), whose sum is σ = 38296664224. Its totient is φ = 3787582032.

The previous prime is 13256537363. The next prime is 13256537377. The reversal of 13256537364 is 46373565231.

It is a happy number.

13256537364 is a `hidden beast` number, since 1 + 3 + 2 + 56 + 537 + 3 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13256537363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26302402 + ... + 26302905.

Almost surely, 2^13256537364 is an apocalyptic number.

13256537364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13256537364 is an abundant number, since it is smaller than the sum of its proper divisors (25040126860).

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

13256537364 is a wasteful number, since it uses less digits than its factorization.

13256537364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52605324 (or 52605319 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 45.

The spelling of 13256537364 in words is "thirteen billion, two hundred fifty-six million, five hundred thirty-seven thousand, three hundred sixty-four".