31869195664 has 10 divisors (see below), whose sum is σ = 61746566630. Its totient is φ = 15934597824.

The previous prime is 31869195641. The next prime is 31869195689. The reversal of 31869195664 is 46659196813.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 31570182400 + 299013264 = 177680^2 + 17292^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31869195599 and 31869195608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 995912349 + ... + 995912380.

It is an arithmetic number, because the mean of its divisors is an integer number (6174656663).

Almost surely, 2^31869195664 is an apocalyptic number.

It is an amenable number.

31869195664 is a deficient number, since it is larger than the sum of its proper divisors (29877370966).

31869195664 is a wasteful number, since it uses less digits than its factorization.

31869195664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991824737 (or 1991824731 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 58.

The spelling of 31869195664 in words is "thirty-one billion, eight hundred sixty-nine million, one hundred ninety-five thousand, six hundred sixty-four".