91120379133220 has 12 divisors (see below), whose sum is σ = 191352796179804. Its totient is φ = 36448151653280.

The previous prime is 91120379133149. The next prime is 91120379133229. The reversal of 91120379133220 is 2233197302119.

It can be written as a sum of positive squares in 2 ways, for example, as 49260100250916 + 41860278882304 = 7018554^2 + 6469952^2 .

It is not an unprimeable number, because it can be changed into a prime (91120379133229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2278009478311 + ... + 2278009478350.

It is an arithmetic number, because the mean of its divisors is an integer number (15946066348317).

Almost surely, 2^{91120379133220} is an apocalyptic number.

It is an amenable number.

91120379133220 is an abundant number, since it is smaller than the sum of its proper divisors (100232417046584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91120379133220 is a wasteful number, since it uses less digits than its factorization.

91120379133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4556018956670 (or 4556018956668 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The spelling of 91120379133220 in words is "ninety-one trillion, one hundred twenty billion, three hundred seventy-nine million, one hundred thirty-three thousand, two hundred twenty".