91640847014 has 8 divisors (see below), whose sum is σ = 137462799600. Its totient is φ = 45819913816.

The previous prime is 91640846993. The next prime is 91640847017. The reversal of 91640847014 is 41074804619.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91640847017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36527 + ... + 429669.

It is an arithmetic number, because the mean of its divisors is an integer number (17182849950).

Almost surely, 2^91640847014 is an apocalyptic number.

91640847014 is a deficient number, since it is larger than the sum of its proper divisors (45821952586).

91640847014 is a wasteful number, since it uses less digits than its factorization.

91640847014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509694.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 91640847014 in words is "ninety-one billion, six hundred forty million, eight hundred forty-seven thousand, fourteen".