23738886721 has 16 divisors (see below), whose sum is σ = 26677389888. Its totient is φ = 20933985600.

The previous prime is 23738886679. The next prime is 23738886733. The reversal of 23738886721 is 12768883732.

It is not a de Polignac number, because 23738886721 - 2⁷ = 23738886593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23738886221) 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, 46611 + ... + 222823.

It is an arithmetic number, because the mean of its divisors is an integer number (1667336868).

Almost surely, 2^23738886721 is an apocalyptic number.

It is an amenable number.

23738886721 is a deficient number, since it is larger than the sum of its proper divisors (2938503167).

23738886721 is a wasteful number, since it uses less digits than its factorization.

23738886721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176592.

The product of its digits is 5419008, while the sum is 55.

The spelling of 23738886721 in words is "twenty-three billion, seven hundred thirty-eight million, eight hundred eighty-six thousand, seven hundred twenty-one".