91050552791 has 16 divisors (see below), whose sum is σ = 100575367200. Its totient is φ = 81736089600.

The previous prime is 91050552781. The next prime is 91050552823. The reversal of 91050552791 is 19725505019.

It is not a de Polignac number, because 91050552791 - 2⁶ = 91050552727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91050552701) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 692381 + ... + 813321.

It is an arithmetic number, because the mean of its divisors is an integer number (6285960450).

Almost surely, 2^91050552791 is an apocalyptic number.

91050552791 is a deficient number, since it is larger than the sum of its proper divisors (9524814409).

91050552791 is a wasteful number, since it uses less digits than its factorization.

91050552791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121810.

The product of its (nonzero) digits is 141750, while the sum is 44.

The spelling of 91050552791 in words is "ninety-one billion, fifty million, five hundred fifty-two thousand, seven hundred ninety-one".