971664565604 has 48 divisors (see below), whose sum is σ = 1770246213120. Its totient is φ = 466098984960.

The previous prime is 971664565579. The next prime is 971664565667. The reversal of 971664565604 is 406565466179.

971664565604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19295699 + ... + 19345989.

It is an arithmetic number, because the mean of its divisors is an integer number (36880129440).

Almost surely, 2^971664565604 is an apocalyptic number.

It is an amenable number.

971664565604 is a deficient number, since it is larger than the sum of its proper divisors (798581647516).

971664565604 is a wasteful number, since it uses less digits than its factorization.

971664565604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51380 (or 51378 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 59.

The spelling of 971664565604 in words is "nine hundred seventy-one billion, six hundred sixty-four million, five hundred sixty-five thousand, six hundred four".