72235911779135 has 32 divisors (see below), whose sum is σ = 93675067411968. Its totient is φ = 53158560768000.

The previous prime is 72235911779029. The next prime is 72235911779191. The reversal of 72235911779135 is 53197711953227.

It is not a de Polignac number, because 72235911779135 - 2²⁰ = 72235910730559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22802135 + ... + 25776135.

It is an arithmetic number, because the mean of its divisors is an integer number (2927345856624).

Almost surely, 2^{72235911779135} is an apocalyptic number.

72235911779135 is a deficient number, since it is larger than the sum of its proper divisors (21439155632833).

72235911779135 is a wasteful number, since it uses less digits than its factorization.

72235911779135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975315.

The product of its digits is 25004700, while the sum is 62.

The spelling of 72235911779135 in words is "seventy-two trillion, two hundred thirty-five billion, nine hundred eleven million, seven hundred seventy-nine thousand, one hundred thirty-five".