72102772144 has 40 divisors (see below), whose sum is σ = 150785005392. Its totient is φ = 33203040000.

The previous prime is 72102772103. The next prime is 72102772219. The reversal of 72102772144 is 44127720127.

It is a happy 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, 299107 + ... + 483394.

Almost surely, 2^72102772144 is an apocalyptic number.

It is an amenable number.

72102772144 is an abundant number, since it is smaller than the sum of its proper divisors (78682233248).

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

72102772144 is a wasteful number, since it uses less digits than its factorization.

72102772144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782965 (or 782959 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 37.

The spelling of 72102772144 in words is "seventy-two billion, one hundred two million, seven hundred seventy-two thousand, one hundred forty-four".