85877583161 has 2 divisors, whose sum is σ = 85877583162. Its totient is φ = 85877583160.

The previous prime is 85877583137. The next prime is 85877583167. The reversal of 85877583161 is 16138577858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75374407936 + 10503175225 = 274544^2 + 102485^2 .

It is a cyclic number.

It is not a de Polignac number, because 85877583161 - 2⁶ = 85877583097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85877583161.

It is not a weakly prime, because it can be changed into another prime (85877583167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42938791580 + 42938791581.

It is an arithmetic number, because the mean of its divisors is an integer number (42938791581).

Almost surely, 2^85877583161 is an apocalyptic number.

It is an amenable number.

85877583161 is a deficient number, since it is larger than the sum of its proper divisors (1).

85877583161 is an equidigital number, since it uses as much as digits as its factorization.

85877583161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11289600, while the sum is 59.

The spelling of 85877583161 in words is "eighty-five billion, eight hundred seventy-seven million, five hundred eighty-three thousand, one hundred sixty-one".