72530756271355 has 32 divisors (see below), whose sum is σ = 91187707023360. Its totient is φ = 55313410584960.

The previous prime is 72530756271353. The next prime is 72530756271427. The reversal of 72530756271355 is 55317265703527.

It is a happy number.

It is not a de Polignac number, because 72530756271355 - 2¹ = 72530756271353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72530756271355.

It is not an unprimeable number, because it can be changed into a prime (72530756271353) 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, 782639961 + ... + 782732629.

It is an arithmetic number, because the mean of its divisors is an integer number (2849615844480).

Almost surely, 2^{72530756271355} is an apocalyptic number.

72530756271355 is a deficient number, since it is larger than the sum of its proper divisors (18656950752005).

72530756271355 is a wasteful number, since it uses less digits than its factorization.

72530756271355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168139.

The product of its (nonzero) digits is 46305000, while the sum is 58.

The spelling of 72530756271355 in words is "seventy-two trillion, five hundred thirty billion, seven hundred fifty-six million, two hundred seventy-one thousand, three hundred fifty-five".