9972390288664 has 16 divisors (see below), whose sum is σ = 18700535502000. Its totient is φ = 4985580821472.

The previous prime is 9972390288571. The next prime is 9972390288797. The reversal of 9972390288664 is 4668820932799.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76721364 + ... + 76851235.

It is an arithmetic number, because the mean of its divisors is an integer number (1168783468875).

Almost surely, 2^{9972390288664} is an apocalyptic number.

It is an amenable number.

9972390288664 is a deficient number, since it is larger than the sum of its proper divisors (8728145213336).

9972390288664 is a wasteful number, since it uses less digits than its factorization.

9972390288664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153580722 (or 153580718 counting only the distinct ones).

The product of its (nonzero) digits is 564350976, while the sum is 73.

The spelling of 9972390288664 in words is "nine trillion, nine hundred seventy-two billion, three hundred ninety million, two hundred eighty-eight thousand, six hundred sixty-four".