72108620836 has 12 divisors (see below), whose sum is σ = 144217241728. Its totient is φ = 30903694632.

The previous prime is 72108620813. The next prime is 72108620869. The reversal of 72108620836 is 63802680127.

72108620836 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 72108620792 and 72108620801.

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, 1287653916 + ... + 1287653971.

Almost surely, 2^72108620836 is an apocalyptic number.

It is an amenable number.

72108620836 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72108620836 is a wasteful number, since it uses less digits than its factorization.

72108620836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575307898 (or 2575307896 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 72108620836 in words is "seventy-two billion, one hundred eight million, six hundred twenty thousand, eight hundred thirty-six".