23696436537 has 12 divisors (see below), whose sum is σ = 34241073984. Its totient is φ = 15791676120.

The previous prime is 23696436521. The next prime is 23696436539. The reversal of 23696436537 is 73563469632.

It is a happy number.

23696436537 is a `hidden beast` number, since 2 + 3 + 69 + 6 + 43 + 6 + 537 = 666.

It is not a de Polignac number, because 23696436537 - 2⁴ = 23696436521 is a prime.

It is a super-2 number, since 2×23696436537² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (23696436539) 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, 470389 + ... + 518322.

It is an arithmetic number, because the mean of its divisors is an integer number (2853422832).

Almost surely, 2^23696436537 is an apocalyptic number.

It is an amenable number.

23696436537 is a deficient number, since it is larger than the sum of its proper divisors (10544637447).

23696436537 is a wasteful number, since it uses less digits than its factorization.

23696436537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991380 (or 991377 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 54.

The spelling of 23696436537 in words is "twenty-three billion, six hundred ninety-six million, four hundred thirty-six thousand, five hundred thirty-seven".