91050552790 has 64 divisors (see below), whose sum is σ = 177945828480. Its totient is φ = 33407631360.

The previous prime is 91050552781. The next prime is 91050552823. The reversal of 91050552790 is 9725505019.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7402966 + ... + 7415254.

It is an arithmetic number, because the mean of its divisors is an integer number (2780403570).

Almost surely, 2^91050552790 is an apocalyptic number.

91050552790 is a deficient number, since it is larger than the sum of its proper divisors (86895275690).

91050552790 is a wasteful number, since it uses less digits than its factorization.

91050552790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13417.

The product of its (nonzero) digits is 141750, while the sum is 43.

The spelling of 91050552790 in words is "ninety-one billion, fifty million, five hundred fifty-two thousand, seven hundred ninety".