85991699619958 has 16 divisors (see below), whose sum is σ = 143986101690816. Its totient is φ = 38178133023240.

The previous prime is 85991699619941. The next prime is 85991699620003.

85991699619958 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45450157416 + ... + 45450159307.

It is an arithmetic number, because the mean of its divisors is an integer number (8999131355676).

Almost surely, 2^{85991699619958} is an apocalyptic number.

85991699619958 is a deficient number, since it is larger than the sum of its proper divisors (57994402070858).

85991699619958 is a wasteful number, since it uses less digits than its factorization.

85991699619958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90900316779.

The product of its digits is 30611001600, while the sum is 94.

The spelling of 85991699619958 in words is "eighty-five trillion, nine hundred ninety-one billion, six hundred ninety-nine million, six hundred nineteen thousand, nine hundred fifty-eight".