85854985291 has 2 divisors, whose sum is σ = 85854985292. Its totient is φ = 85854985290.

The previous prime is 85854985283. The next prime is 85854985309. The reversal of 85854985291 is 19258945858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85854985291 - 2³ = 85854985283 is a prime.

It is not a weakly prime, because it can be changed into another prime (85854985241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42927492645 + 42927492646.

It is an arithmetic number, because the mean of its divisors is an integer number (42927492646).

Almost surely, 2^85854985291 is an apocalyptic number.

85854985291 is a deficient number, since it is larger than the sum of its proper divisors (1).

85854985291 is an equidigital number, since it uses as much as digits as its factorization.

85854985291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472000, while the sum is 64.

The spelling of 85854985291 in words is "eighty-five billion, eight hundred fifty-four million, nine hundred eighty-five thousand, two hundred ninety-one".