23768739640 has 32 divisors (see below), whose sum is σ = 53493961680. Its totient is φ = 9504954112.

The previous prime is 23768739593. The next prime is 23768739661. The reversal of 23768739640 is 4693786732.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 75807 + ... + 230833.

Almost surely, 2^23768739640 is an apocalyptic number.

23768739640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23768739640 is an abundant number, since it is smaller than the sum of its proper divisors (29725222040).

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

23768739640 is a wasteful number, since it uses less digits than its factorization.

23768739640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158871 (or 158867 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 55.

The spelling of 23768739640 in words is "twenty-three billion, seven hundred sixty-eight million, seven hundred thirty-nine thousand, six hundred forty".