72155504313607 has 32 divisors (see below), whose sum is σ = 84846555279360. Its totient is φ = 60495486232320.

The previous prime is 72155504313577. The next prime is 72155504313617. The reversal of 72155504313607 is 70631340555127.

It is a cyclic number.

It is not a de Polignac number, because 72155504313607 - 2¹⁹ = 72155503789319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72155504313617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 857492178 + ... + 857576320.

It is an arithmetic number, because the mean of its divisors is an integer number (2651454852480).

Almost surely, 2^{72155504313607} is an apocalyptic number.

72155504313607 is a deficient number, since it is larger than the sum of its proper divisors (12691050965753).

72155504313607 is a wasteful number, since it uses less digits than its factorization.

72155504313607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89503.

The product of its (nonzero) digits is 2646000, while the sum is 49.

The spelling of 72155504313607 in words is "seventy-two trillion, one hundred fifty-five billion, five hundred four million, three hundred thirteen thousand, six hundred seven".