72656938127867 has 4 divisors (see below), whose sum is σ = 72764260046016. Its totient is φ = 72549616209720.

The previous prime is 72656938127821. The next prime is 72656938127887. The reversal of 72656938127867 is 76872183965627.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72656938127867 - 2³⁸ = 72382060220923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72656938127887) 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, 53660958059 + ... + 53660959412.

It is an arithmetic number, because the mean of its divisors is an integer number (18191065011504).

Almost surely, 2^{72656938127867} is an apocalyptic number.

72656938127867 is a deficient number, since it is larger than the sum of its proper divisors (107321918149).

72656938127867 is a wasteful number, since it uses less digits than its factorization.

72656938127867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107321918148.

The product of its digits is 2560481280, while the sum is 77.

The spelling of 72656938127867 in words is "seventy-two trillion, six hundred fifty-six billion, nine hundred thirty-eight million, one hundred twenty-seven thousand, eight hundred sixty-seven".