85212777474179 has 2 divisors, whose sum is σ = 85212777474180. Its totient is φ = 85212777474178.

The previous prime is 85212777474169. The next prime is 85212777474193. The reversal of 85212777474179 is 97147477721258.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85212777474179 is a prime.

It is a super-2 number, since 2×85212777474179² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85212777474169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42606388737089 + 42606388737090.

It is an arithmetic number, because the mean of its divisors is an integer number (42606388737090).

Almost surely, 2^{85212777474179} is an apocalyptic number.

85212777474179 is a deficient number, since it is larger than the sum of its proper divisors (1).

85212777474179 is an equidigital number, since it uses as much as digits as its factorization.

85212777474179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387233280, while the sum is 71.

The spelling of 85212777474179 in words is "eighty-five trillion, two hundred twelve billion, seven hundred seventy-seven million, four hundred seventy-four thousand, one hundred seventy-nine".