85386871951 has 2 divisors, whose sum is σ = 85386871952. Its totient is φ = 85386871950.

The previous prime is 85386871883. The next prime is 85386871961. The reversal of 85386871951 is 15917868358.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85386871951 - 2²³ = 85378483343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85386871951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85386871961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42693435975 + 42693435976.

It is an arithmetic number, because the mean of its divisors is an integer number (42693435976).

Almost surely, 2^85386871951 is an apocalyptic number.

85386871951 is a deficient number, since it is larger than the sum of its proper divisors (1).

85386871951 is an equidigital number, since it uses as much as digits as its factorization.

85386871951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14515200, while the sum is 61.

The spelling of 85386871951 in words is "eighty-five billion, three hundred eighty-six million, eight hundred seventy-one thousand, nine hundred fifty-one".