72420374512536 has 64 divisors (see below), whose sum is σ = 181124741809920. Its totient is φ = 24130285845120.

The previous prime is 72420374512529. The next prime is 72420374512553. The reversal of 72420374512536 is 63521547302427.

It is a super-3 number, since 3×72420374512536³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 749311431 + ... + 749408073.

It is an arithmetic number, because the mean of its divisors is an integer number (2830074090780).

Almost surely, 2^{72420374512536} is an apocalyptic number.

It is an amenable number.

72420374512536 is an abundant number, since it is smaller than the sum of its proper divisors (108704367297384).

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

72420374512536 is a wasteful number, since it uses less digits than its factorization.

72420374512536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109056 (or 109052 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 51.

The spelling of 72420374512536 in words is "seventy-two trillion, four hundred twenty billion, three hundred seventy-four million, five hundred twelve thousand, five hundred thirty-six".