72207246531 has 8 divisors (see below), whose sum is σ = 110030089984. Its totient is φ = 41261283720.

The previous prime is 72207246521. The next prime is 72207246539. The reversal of 72207246531 is 13564270227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72207246531 - 2²⁹ = 71670375619 is a prime.

It is a super-2 number, since 2×72207246531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72207246531.

It is not an unprimeable number, because it can be changed into a prime (72207246539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1719220135 + ... + 1719220176.

It is an arithmetic number, because the mean of its divisors is an integer number (13753761248).

Almost surely, 2^72207246531 is an apocalyptic number.

72207246531 is a deficient number, since it is larger than the sum of its proper divisors (37822843453).

72207246531 is a wasteful number, since it uses less digits than its factorization.

72207246531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3438440321.

The product of its (nonzero) digits is 141120, while the sum is 39.

The spelling of 72207246531 in words is "seventy-two billion, two hundred seven million, two hundred forty-six thousand, five hundred thirty-one".