72534510323 has 12 divisors (see below), whose sum is σ = 79739565864. Its totient is φ = 65930911200.

The previous prime is 72534510287. The next prime is 72534510383. The reversal of 72534510323 is 32301543527.

It is not a de Polignac number, because 72534510323 - 2⁶ = 72534510259 is a prime.

It is a super-2 number, since 2×72534510323² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72534510383) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 875240 + ... + 954522.

It is an arithmetic number, because the mean of its divisors is an integer number (6644963822).

Almost surely, 2^72534510323 is an apocalyptic number.

72534510323 is a deficient number, since it is larger than the sum of its proper divisors (7205055541).

72534510323 is a wasteful number, since it uses less digits than its factorization.

72534510323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86866 (or 86855 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 35.

The spelling of 72534510323 in words is "seventy-two billion, five hundred thirty-four million, five hundred ten thousand, three hundred twenty-three".