91914779295 has 32 divisors (see below), whose sum is σ = 164579654400. Its totient is φ = 48668535072.

The previous prime is 91914779293. The next prime is 91914779317. The reversal of 91914779295 is 59297741919.

It is a happy number.

It is not a de Polignac number, because 91914779295 - 2¹ = 91914779293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91914779293) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2430337 + ... + 2467866.

It is an arithmetic number, because the mean of its divisors is an integer number (5143114200).

Almost surely, 2^91914779295 is an apocalyptic number.

91914779295 is a deficient number, since it is larger than the sum of its proper divisors (72664875105).

91914779295 is a wasteful number, since it uses less digits than its factorization.

91914779295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4898356 (or 4898350 counting only the distinct ones).

The product of its digits is 12859560, while the sum is 63.

The spelling of 91914779295 in words is "ninety-one billion, nine hundred fourteen million, seven hundred seventy-nine thousand, two hundred ninety-five".