91940455042 has 16 divisors (see below), whose sum is σ = 145175990400. Its totient is φ = 43548686640.

The previous prime is 91940455021. The next prime is 91940455073. The reversal of 91940455042 is 24055404919.

It is a self number, because there is not a number n which added to its sum of digits gives 91940455042.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025184 + ... + 1111252.

It is an arithmetic number, because the mean of its divisors is an integer number (9073499400).

Almost surely, 2^91940455042 is an apocalyptic number.

91940455042 is a deficient number, since it is larger than the sum of its proper divisors (53235535358).

91940455042 is a wasteful number, since it uses less digits than its factorization.

91940455042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114201.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 91940455042 in words is "ninety-one billion, nine hundred forty million, four hundred fifty-five thousand, forty-two".