91936950685839 has 144 divisors (see below), whose sum is σ = 157886879829120. Its totient is φ = 51389225072640.

The previous prime is 91936950685807. The next prime is 91936950685841. The reversal of 91936950685839 is 93858605963919.

91936950685839 is a `hidden beast` number, since 9 + 19 + 3 + 69 + 506 + 8 + 5 + 8 + 39 = 666.

It is not a de Polignac number, because 91936950685839 - 2⁵ = 91936950685807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91936950681839) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 14318163849 + ... + 14318170269.

It is an arithmetic number, because the mean of its divisors is an integer number (1096436665480).

Almost surely, 2^{91936950685839} is an apocalyptic number.

91936950685839 is a deficient number, since it is larger than the sum of its proper divisors (65949929143281).

91936950685839 is a wasteful number, since it uses less digits than its factorization.

91936950685839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10270 (or 10260 counting only the distinct ones).

The product of its (nonzero) digits is 3401222400, while the sum is 81.

The spelling of 91936950685839 in words is "ninety-one trillion, nine hundred thirty-six billion, nine hundred fifty million, six hundred eighty-five thousand, eight hundred thirty-nine".