85901494193 has 2 divisors, whose sum is σ = 85901494194. Its totient is φ = 85901494192.

The previous prime is 85901494169. The next prime is 85901494199. The reversal of 85901494193 is 39149410958.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44086561024 + 41814933169 = 209968^2 + 204487^2 .

It is a cyclic number.

It is not a de Polignac number, because 85901494193 - 2²⁸ = 85633058737 is a prime.

It is not a weakly prime, because it can be changed into another prime (85901494199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42950747096 + 42950747097.

It is an arithmetic number, because the mean of its divisors is an integer number (42950747097).

Almost surely, 2^85901494193 is an apocalyptic number.

It is an amenable number.

85901494193 is a deficient number, since it is larger than the sum of its proper divisors (1).

85901494193 is an equidigital number, since it uses as much as digits as its factorization.

85901494193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 85901494193 in words is "eighty-five billion, nine hundred one million, four hundred ninety-four thousand, one hundred ninety-three".