23707643913 has 12 divisors (see below), whose sum is σ = 36258749748. Its totient is φ = 14875384320.

The previous prime is 23707643909. The next prime is 23707643923. The reversal of 23707643913 is 31934670732.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17021638089 + 6686005824 = 130467^2 + 81768^2 .

It is not a de Polignac number, because 23707643913 - 2² = 23707643909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23707643903) 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, 77475808 + ... + 77476113.

It is an arithmetic number, because the mean of its divisors is an integer number (3021562479).

Almost surely, 2^23707643913 is an apocalyptic number.

It is an amenable number.

23707643913 is a deficient number, since it is larger than the sum of its proper divisors (12551105835).

23707643913 is a wasteful number, since it uses less digits than its factorization.

23707643913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154951944 (or 154951941 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 45.

The spelling of 23707643913 in words is "twenty-three billion, seven hundred seven million, six hundred forty-three thousand, nine hundred thirteen".