72012546656 has 48 divisors (see below), whose sum is σ = 151394624640. Its totient is φ = 33643223040.

The previous prime is 72012546649. The next prime is 72012546677. The reversal of 72012546656 is 65664521027.

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, 1222841 + ... + 1280376.

It is an arithmetic number, because the mean of its divisors is an integer number (3154054680).

Almost surely, 2^72012546656 is an apocalyptic number.

It is an amenable number.

72012546656 is an abundant number, since it is smaller than the sum of its proper divisors (79382077984).

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

72012546656 is a wasteful number, since it uses less digits than its factorization.

72012546656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503287 (or 2503279 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 72012546656 in words is "seventy-two billion, twelve million, five hundred forty-six thousand, six hundred fifty-six".