23679662640 has 80 divisors (see below), whose sum is σ = 73424491008. Its totient is φ = 6313068288.

The previous prime is 23679662603. The next prime is 23679662663. The reversal of 23679662640 is 4626697632.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1297257 + ... + 1315383.

Almost surely, 2^23679662640 is an apocalyptic number.

23679662640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23679662640 is an abundant number, since it is smaller than the sum of its proper divisors (49744828368).

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

23679662640 is a wasteful number, since it uses less digits than its factorization.

23679662640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23586 (or 23580 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 51.

The spelling of 23679662640 in words is "twenty-three billion, six hundred seventy-nine million, six hundred sixty-two thousand, six hundred forty".