91396674936 has 144 divisors (see below), whose sum is σ = 288084794400. Its totient is φ = 26100764928.

The previous prime is 91396674917. The next prime is 91396674953. The reversal of 91396674936 is 63947669319.

91396674936 is a `hidden beast` number, since 9 + 139 + 6 + 6 + 7 + 493 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9284305 + ... + 9294143.

It is an arithmetic number, because the mean of its divisors is an integer number (2000588850).

Almost surely, 2^91396674936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91396674936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144042397200).

91396674936 is an abundant number, since it is smaller than the sum of its proper divisors (196688119464).

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

91396674936 is a wasteful number, since it uses less digits than its factorization.

91396674936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12498 (or 12484 counting only the distinct ones).

The product of its digits is 39680928, while the sum is 63.

The spelling of 91396674936 in words is "ninety-one billion, three hundred ninety-six million, six hundred seventy-four thousand, nine hundred thirty-six".