72690924664 has 8 divisors (see below), whose sum is σ = 136295483760. Its totient is φ = 36345462328.

The previous prime is 72690924623. The next prime is 72690924721. The reversal of 72690924664 is 46642909627.

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

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4543182784 + ... + 4543182799.

It is an arithmetic number, because the mean of its divisors is an integer number (17036935470).

Almost surely, 2^72690924664 is an apocalyptic number.

It is an amenable number.

72690924664 is a deficient number, since it is larger than the sum of its proper divisors (63604559096).

72690924664 is a wasteful number, since it uses less digits than its factorization.

72690924664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9086365589 (or 9086365585 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 55.

The spelling of 72690924664 in words is "seventy-two billion, six hundred ninety million, nine hundred twenty-four thousand, six hundred sixty-four".