72187070735 has 32 divisors (see below), whose sum is σ = 96449149440. Its totient is φ = 51506380800.

The previous prime is 72187070719. The next prime is 72187070749. The reversal of 72187070735 is 53707078127.

It is not a de Polignac number, because 72187070735 - 2⁴ = 72187070719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72187070735.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1263671 + ... + 1319559.

It is an arithmetic number, because the mean of its divisors is an integer number (3014035920).

Almost surely, 2^72187070735 is an apocalyptic number.

72187070735 is a deficient number, since it is larger than the sum of its proper divisors (24262078705).

72187070735 is a wasteful number, since it uses less digits than its factorization.

72187070735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56579.

The product of its (nonzero) digits is 576240, while the sum is 47.

The spelling of 72187070735 in words is "seventy-two billion, one hundred eighty-seven million, seventy thousand, seven hundred thirty-five".