7891312627 has 16 divisors (see below), whose sum is σ = 8988744960. Its totient is φ = 6857620000.

The previous prime is 7891312609. The next prime is 7891312631. The reversal of 7891312627 is 7262131987.

It is a de Polignac number, because none of the positive numbers 2^k-7891312627 is a prime.

It is a super-2 number, since 2×7891312627² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7891316627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423252 + ... + 441502.

It is an arithmetic number, because the mean of its divisors is an integer number (561796560).

Almost surely, 2^7891312627 is an apocalyptic number.

7891312627 is a deficient number, since it is larger than the sum of its proper divisors (1097432333).

7891312627 is a wasteful number, since it uses less digits than its factorization.

7891312627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19994.

The product of its digits is 254016, while the sum is 46.

The square root of 7891312627 is about 88833.0604392306. The cubic root of 7891312627 is about 1990.9013893274.

The spelling of 7891312627 in words is "seven billion, eight hundred ninety-one million, three hundred twelve thousand, six hundred twenty-seven".