73722513920 has 80 divisors (see below), whose sum is σ = 192830524128. Its totient is φ = 26808176640.

The previous prime is 73722513911. The next prime is 73722513961. The reversal of 73722513920 is 2931522737.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1280834 + ... + 1337153.

Almost surely, 2^73722513920 is an apocalyptic number.

It is an amenable number.

73722513920 is an abundant number, since it is smaller than the sum of its proper divisors (119108010208).

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

73722513920 is a wasteful number, since it uses less digits than its factorization.

73722513920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618021 (or 2618005 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 41.

The spelling of 73722513920 in words is "seventy-three billion, seven hundred twenty-two million, five hundred thirteen thousand, nine hundred twenty".