23621460643 has 16 divisors (see below), whose sum is σ = 26534707200. Its totient is φ = 21017104680.

The previous prime is 23621460617. The next prime is 23621460701. The reversal of 23621460643 is 34606412632.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-23621460643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23621460743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126243 + ... + 251356.

It is an arithmetic number, because the mean of its divisors is an integer number (1658419200).

Almost surely, 2^23621460643 is an apocalyptic number.

23621460643 is a deficient number, since it is larger than the sum of its proper divisors (2913246557).

23621460643 is an equidigital number, since it uses as much as digits as its factorization.

23621460643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377679 (or 377657 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 23621460643 in words is "twenty-three billion, six hundred twenty-one million, four hundred sixty thousand, six hundred forty-three".