85904991351 has 12 divisors (see below), whose sum is σ = 127438636312. Its totient is φ = 55722156336.

The previous prime is 85904991323. The next prime is 85904991373. The reversal of 85904991351 is 15319940958.

85904991351 is a `hidden beast` number, since 8 + 5 + 90 + 499 + 13 + 51 = 666.

It is not a de Polignac number, because 85904991351 - 2¹⁹ = 85904467063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85904996351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128986141 + ... + 128986806.

Almost surely, 2^85904991351 is an apocalyptic number.

85904991351 is a deficient number, since it is larger than the sum of its proper divisors (41533644961).

85904991351 is a wasteful number, since it uses less digits than its factorization.

85904991351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257972990 (or 257972987 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 54.

The spelling of 85904991351 in words is "eighty-five billion, nine hundred four million, nine hundred ninety-one thousand, three hundred fifty-one".