23640423532 has 24 divisors (see below), whose sum is σ = 45461157840. Its totient is φ = 10667208960.

The previous prime is 23640423511. The next prime is 23640423613. The reversal of 23640423532 is 23532404632.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1954857 + ... + 1966912.

It is an arithmetic number, because the mean of its divisors is an integer number (1894214910).

Almost surely, 2^23640423532 is an apocalyptic number.

23640423532 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23640423532 is a deficient number, since it is larger than the sum of its proper divisors (21820734308).

23640423532 is a wasteful number, since it uses less digits than its factorization.

23640423532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3921921 (or 3921919 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 34.

The spelling of 23640423532 in words is "twenty-three billion, six hundred forty million, four hundred twenty-three thousand, five hundred thirty-two".