91409371196 has 24 divisors (see below), whose sum is σ = 187932554544. Its totient is φ = 38353582080.

The previous prime is 91409371177. The next prime is 91409371199. The reversal of 91409371196 is 69117390419.

It is a happy number.

It is a super-2 number, since 2×91409371196² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91409371199) 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, 79902725 + ... + 79903868.

It is an arithmetic number, because the mean of its divisors is an integer number (7830523106).

Almost surely, 2^91409371196 is an apocalyptic number.

It is an amenable number.

91409371196 is an abundant number, since it is smaller than the sum of its proper divisors (96523183348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91409371196 is a wasteful number, since it uses less digits than its factorization.

91409371196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159806621 (or 159806619 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 50.

The spelling of 91409371196 in words is "ninety-one billion, four hundred nine million, three hundred seventy-one thousand, one hundred ninety-six".