85977417191371 has 2 divisors, whose sum is σ = 85977417191372. Its totient is φ = 85977417191370.

The previous prime is 85977417191363. The next prime is 85977417191423. The reversal of 85977417191371 is 17319171477958.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85977417191371 - 2³ = 85977417191363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85977417191371.

It is not a weakly prime, because it can be changed into another prime (85977417791371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42988708595685 + 42988708595686.

It is an arithmetic number, because the mean of its divisors is an integer number (42988708595686).

Almost surely, 2^{85977417191371} is an apocalyptic number.

85977417191371 is a deficient number, since it is larger than the sum of its proper divisors (1).

85977417191371 is an equidigital number, since it uses as much as digits as its factorization.

85977417191371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93350880, while the sum is 70.

The spelling of 85977417191371 in words is "eighty-five trillion, nine hundred seventy-seven billion, four hundred seventeen million, one hundred ninety-one thousand, three hundred seventy-one".