91475883814 has 64 divisors (see below), whose sum is σ = 167839547904. Its totient is φ = 36499032576.

The previous prime is 91475883769. The next prime is 91475883859. The reversal of 91475883814 is 41838857419.

It is an interprime number because it is at equal distance from previous prime (91475883769) and next prime (91475883859).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20294149 + ... + 20298655.

It is an arithmetic number, because the mean of its divisors is an integer number (2622492936).

Almost surely, 2^91475883814 is an apocalyptic number.

91475883814 is a deficient number, since it is larger than the sum of its proper divisors (76363664090).

91475883814 is a wasteful number, since it uses less digits than its factorization.

91475883814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5437.

The product of its digits is 7741440, while the sum is 58.

The spelling of 91475883814 in words is "ninety-one billion, four hundred seventy-five million, eight hundred eighty-three thousand, eight hundred fourteen".