72267656107 has 4 divisors (see below), whose sum is σ = 72819317736. Its totient is φ = 71715994480.

The previous prime is 72267656101. The next prime is 72267656177. The reversal of 72267656107 is 70165676227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70165676227 = 5821 ⋅12053887.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72267656107 is a prime.

It is a super-2 number, since 2×72267656107² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72267656101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275830618 + ... + 275830879.

It is an arithmetic number, because the mean of its divisors is an integer number (18204829434).

Almost surely, 2^72267656107 is an apocalyptic number.

72267656107 is a deficient number, since it is larger than the sum of its proper divisors (551661629).

72267656107 is a wasteful number, since it uses less digits than its factorization.

72267656107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551661628.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 72267656107 in words is "seventy-two billion, two hundred sixty-seven million, six hundred fifty-six thousand, one hundred seven".