21715746400232 has 8 divisors (see below), whose sum is σ = 40717024500450. Its totient is φ = 10857873200112.

The previous prime is 21715746400217. The next prime is 21715746400261. The reversal of 21715746400232 is 23200464751712.

It can be written as a sum of positive squares in only one way, i.e., 12113643577156 + 9602102823076 = 3480466^2 + 3098726^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1357234150007 + ... + 1357234150022.

Almost surely, 2^{21715746400232} is an apocalyptic number.

It is an amenable number.

21715746400232 is a deficient number, since it is larger than the sum of its proper divisors (19001278100218).

21715746400232 is a wasteful number, since it uses less digits than its factorization.

21715746400232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714468300035 (or 2714468300031 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 21715746400232 in words is "twenty-one trillion, seven hundred fifteen billion, seven hundred forty-six million, four hundred thousand, two hundred thirty-two".