72744073764 has 24 divisors (see below), whose sum is σ = 169831206048. Its totient is φ = 24234448320.

The previous prime is 72744073733. The next prime is 72744073789. The reversal of 72744073764 is 46737044727.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1674697 + ... + 1717584.

It is an arithmetic number, because the mean of its divisors is an integer number (7076300252).

Almost surely, 2^72744073764 is an apocalyptic number.

It is an amenable number.

72744073764 is an abundant number, since it is smaller than the sum of its proper divisors (97087132284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72744073764 is a wasteful number, since it uses less digits than its factorization.

72744073764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3394075 (or 3394073 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 51.

The spelling of 72744073764 in words is "seventy-two billion, seven hundred forty-four million, seventy-three thousand, seven hundred sixty-four".