91308739606 has 16 divisors (see below), whose sum is σ = 158733907200. Its totient is φ = 38581157160.

The previous prime is 91308739591. The next prime is 91308739607. The reversal of 91308739606 is 60693780319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91308739607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45928956 + ... + 45930943.

It is an arithmetic number, because the mean of its divisors is an integer number (9920869200).

Almost surely, 2^91308739606 is an apocalyptic number.

91308739606 is a deficient number, since it is larger than the sum of its proper divisors (67425167594).

91308739606 is a wasteful number, since it uses less digits than its factorization.

91308739606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91859979.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 91308739606 in words is "ninety-one billion, three hundred eight million, seven hundred thirty-nine thousand, six hundred six".