91407962247 has 16 divisors (see below), whose sum is σ = 140590086912. Its totient is φ = 51744960000.

The previous prime is 91407962237. The next prime is 91407962251. The reversal of 91407962247 is 74226970419.

It is not a de Polignac number, because 91407962247 - 2⁷ = 91407962119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91407962247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91407962237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20337754 + ... + 20342247.

It is an arithmetic number, because the mean of its divisors is an integer number (8786880432).

Almost surely, 2^91407962247 is an apocalyptic number.

91407962247 is a deficient number, since it is larger than the sum of its proper divisors (49182124665).

91407962247 is a wasteful number, since it uses less digits than its factorization.

91407962247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40680118.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 91407962247 in words is "ninety-one billion, four hundred seven million, nine hundred sixty-two thousand, two hundred forty-seven".