72866931107 has 4 divisors (see below), whose sum is σ = 73685660760. Its totient is φ = 72048201456.

The previous prime is 72866931091. The next prime is 72866931167. The reversal of 72866931107 is 70113966827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70113966827 = 73 ⋅960465299.

It is a cyclic number.

It is not a de Polignac number, because 72866931107 - 2⁴ = 72866931091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72866931167) 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, 409364693 + ... + 409364870.

It is an arithmetic number, because the mean of its divisors is an integer number (18421415190).

Almost surely, 2^72866931107 is an apocalyptic number.

72866931107 is a deficient number, since it is larger than the sum of its proper divisors (818729653).

72866931107 is an equidigital number, since it uses as much as digits as its factorization.

72866931107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818729652.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 72866931107 in words is "seventy-two billion, eight hundred sixty-six million, nine hundred thirty-one thousand, one hundred seven".