72267306672 has 40 divisors (see below), whose sum is σ = 203662411200. Its totient is φ = 21899183680.

The previous prime is 72267306637. The next prime is 72267306701. The reversal of 72267306672 is 27660376227.

It is a super-2 number, since 2×72267306672² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 68434422 + ... + 68435477.

It is an arithmetic number, because the mean of its divisors is an integer number (5091560280).

Almost surely, 2^72267306672 is an apocalyptic number.

It is an amenable number.

72267306672 is an abundant number, since it is smaller than the sum of its proper divisors (131395104528).

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

72267306672 is a wasteful number, since it uses less digits than its factorization.

72267306672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136869921 (or 136869915 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 48.

The spelling of 72267306672 in words is "seventy-two billion, two hundred sixty-seven million, three hundred six thousand, six hundred seventy-two".