23634772357 has 12 divisors (see below), whose sum is σ = 27548198496. Its totient is φ = 20218080120.

The previous prime is 23634772349. The next prime is 23634772409. The reversal of 23634772357 is 75327743632.

It is not a de Polignac number, because 23634772357 - 2³ = 23634772349 is a prime.

It is a super-2 number, since 2×23634772357² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 23634772357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23634776357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 454819 + ... + 504112.

It is an arithmetic number, because the mean of its divisors is an integer number (2295683208).

Almost surely, 2^23634772357 is an apocalyptic number.

It is an amenable number.

23634772357 is a deficient number, since it is larger than the sum of its proper divisors (3913426139).

23634772357 is an equidigital number, since it uses as much as digits as its factorization.

23634772357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959448 (or 959441 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 49.

The spelling of 23634772357 in words is "twenty-three billion, six hundred thirty-four million, seven hundred seventy-two thousand, three hundred fifty-seven".