72747660734 has 8 divisors (see below), whose sum is σ = 124710275568. Its totient is φ = 31177568880.

The previous prime is 72747660707. The next prime is 72747660757. The reversal of 72747660734 is 43706674727.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 2598130727 + ... + 2598130754.

It is an arithmetic number, because the mean of its divisors is an integer number (15588784446).

Almost surely, 2^72747660734 is an apocalyptic number.

72747660734 is a deficient number, since it is larger than the sum of its proper divisors (51962614834).

72747660734 is a wasteful number, since it uses less digits than its factorization.

72747660734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5196261490.

The product of its (nonzero) digits is 8297856, while the sum is 53.

The spelling of 72747660734 in words is "seventy-two billion, seven hundred forty-seven million, six hundred sixty thousand, seven hundred thirty-four".