91886695552 has 32 divisors (see below), whose sum is σ = 183088499580. Its totient is φ = 45935072256.

The previous prime is 91886695541. The next prime is 91886695577. The reversal of 91886695552 is 25559668819.

It can be written as a sum of positive squares in 2 ways, for example, as 91750833216 + 135862336 = 302904^2 + 11656^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (64).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682318 + ... + 805810.

Almost surely, 2^91886695552 is an apocalyptic number.

It is an amenable number.

91886695552 is a deficient number, since it is larger than the sum of its proper divisors (91201804028).

91886695552 is a wasteful number, since it uses less digits than its factorization.

91886695552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129320 (or 129308 counting only the distinct ones).

The product of its digits is 46656000, while the sum is 64.

The spelling of 91886695552 in words is "ninety-one billion, eight hundred eighty-six million, six hundred ninety-five thousand, five hundred fifty-two".