72549261362 has 18 divisors (see below), whose sum is σ = 109372301757. Its totient is φ = 36092742336.

The previous prime is 72549261349. The next prime is 72549261403. The reversal of 72549261362 is 26316294527.

It can be written as a sum of positive squares in 2 ways, for example, as 70315659241 + 2233602121 = 265171^2 + 47261^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=190459.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 107799458 + ... + 107800130.

Almost surely, 2^72549261362 is an apocalyptic number.

72549261362 is a deficient number, since it is larger than the sum of its proper divisors (36823040395).

72549261362 is an frugal number, since it uses more digits than its factorization.

72549261362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914 (or 958 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 47.

The spelling of 72549261362 in words is "seventy-two billion, five hundred forty-nine million, two hundred sixty-one thousand, three hundred sixty-two".