72110645644 has 12 divisors (see below), whose sum is σ = 126195688584. Its totient is φ = 36054734624.

The previous prime is 72110645639. The next prime is 72110645693. The reversal of 72110645644 is 44654601127.

It is a junction number, because it is equal to n+sod(n) for n = 72110645597 and 72110645606.

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, 244824 + ... + 451840.

It is an arithmetic number, because the mean of its divisors is an integer number (10516307382).

Almost surely, 2^72110645644 is an apocalyptic number.

It is an amenable number.

72110645644 is a deficient number, since it is larger than the sum of its proper divisors (54085042940).

72110645644 is a wasteful number, since it uses less digits than its factorization.

72110645644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294104 (or 294102 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 72110645644 in words is "seventy-two billion, one hundred ten million, six hundred forty-five thousand, six hundred forty-four".