72270510660 has 48 divisors (see below), whose sum is σ = 224841590400. Its totient is φ = 19272136032.

The previous prime is 72270510527. The next prime is 72270510671. The reversal of 72270510660 is 6601507227.

72270510660 is a `hidden beast` number, since 72 + 2 + 70 + 510 + 6 + 6 + 0 = 666.

It is a super-2 number, since 2×72270510660² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66916600 + ... + 66917679.

It is an arithmetic number, because the mean of its divisors is an integer number (4684199800).

Almost surely, 2^72270510660 is an apocalyptic number.

It is an amenable number.

72270510660 is an abundant number, since it is smaller than the sum of its proper divisors (152571079740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72270510660 is a wasteful number, since it uses less digits than its factorization.

72270510660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133834297 (or 133834289 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The spelling of 72270510660 in words is "seventy-two billion, two hundred seventy million, five hundred ten thousand, six hundred sixty".