84591276971 has 2 divisors, whose sum is σ = 84591276972. Its totient is φ = 84591276970.

The previous prime is 84591276967. The next prime is 84591277019. The reversal of 84591276971 is 17967219548.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84591276971 - 2² = 84591276967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84591276971.

It is not a weakly prime, because it can be changed into another prime (84591275971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42295638485 + 42295638486.

It is an arithmetic number, because the mean of its divisors is an integer number (42295638486).

Almost surely, 2^84591276971 is an apocalyptic number.

84591276971 is a deficient number, since it is larger than the sum of its proper divisors (1).

84591276971 is an equidigital number, since it uses as much as digits as its factorization.

84591276971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 59.

The spelling of 84591276971 in words is "eighty-four billion, five hundred ninety-one million, two hundred seventy-six thousand, nine hundred seventy-one".