72560991764 has 24 divisors (see below), whose sum is σ = 127595569920. Its totient is φ = 36105312096.

The previous prime is 72560991757. The next prime is 72560991779. The reversal of 72560991764 is 46719906527.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1502969 + ... + 1550495.

It is an arithmetic number, because the mean of its divisors is an integer number (5316482080).

Almost surely, 2^72560991764 is an apocalyptic number.

It is an amenable number.

72560991764 is a deficient number, since it is larger than the sum of its proper divisors (55034578156).

72560991764 is a wasteful number, since it uses less digits than its factorization.

72560991764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49367 (or 49365 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 72560991764 in words is "seventy-two billion, five hundred sixty million, nine hundred ninety-one thousand, seven hundred sixty-four".