91250775033 has 32 divisors (see below), whose sum is σ = 140568141312. Its totient is φ = 52038432000.

The previous prime is 91250775029. The next prime is 91250775037. The reversal of 91250775033 is 33057705219.

It is an interprime number because it is at equal distance from previous prime (91250775029) and next prime (91250775037).

It is not a de Polignac number, because 91250775033 - 2² = 91250775029 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91250775037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2817510 + ... + 2849712.

It is an arithmetic number, because the mean of its divisors is an integer number (4392754416).

Almost surely, 2^91250775033 is an apocalyptic number.

It is an amenable number.

91250775033 is a deficient number, since it is larger than the sum of its proper divisors (49317366279).

91250775033 is a wasteful number, since it uses less digits than its factorization.

91250775033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37285.

The product of its (nonzero) digits is 198450, while the sum is 42.

The spelling of 91250775033 in words is "ninety-one billion, two hundred fifty million, seven hundred seventy-five thousand, thirty-three".