23623663640 has 32 divisors (see below), whose sum is σ = 53159755680. Its totient is φ = 9448307712.

The previous prime is 23623663619. The next prime is 23623663649. The reversal of 23623663640 is 4636632632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23623663649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343589 + ... + 406571.

It is an arithmetic number, because the mean of its divisors is an integer number (1661242365).

Almost surely, 2^23623663640 is an apocalyptic number.

23623663640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23623663640 is an abundant number, since it is smaller than the sum of its proper divisors (29536092040).

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

23623663640 is a wasteful number, since it uses less digits than its factorization.

23623663640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72371 (or 72367 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 41.

The spelling of 23623663640 in words is "twenty-three billion, six hundred twenty-three million, six hundred sixty-three thousand, six hundred forty".