91585696634 has 4 divisors (see below), whose sum is σ = 137378544954. Its totient is φ = 45792848316.

The previous prime is 91585696627. The next prime is 91585696651. The reversal of 91585696634 is 43669658519.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50843485225 + 40742211409 = 225485^2 + 201847^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22896424157 + ... + 22896424160.

Almost surely, 2^91585696634 is an apocalyptic number.

91585696634 is a deficient number, since it is larger than the sum of its proper divisors (45792848320).

91585696634 is a wasteful number, since it uses less digits than its factorization.

91585696634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45792848319.

The product of its digits is 41990400, while the sum is 62.

The spelling of 91585696634 in words is "ninety-one billion, five hundred eighty-five million, six hundred ninety-six thousand, six hundred thirty-four".