91280134294039 has 4 divisors (see below), whose sum is σ = 93506479032960. Its totient is φ = 89053789555120.

The previous prime is 91280134294033. The next prime is 91280134294043. The reversal of 91280134294039 is 93049243108219.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91280134294039 - 2³ = 91280134294031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91280134294031) 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, 1113172369399 + ... + 1113172369480.

It is an arithmetic number, because the mean of its divisors is an integer number (23376619758240).

Almost surely, 2^{91280134294039} is an apocalyptic number.

91280134294039 is a deficient number, since it is larger than the sum of its proper divisors (2226344738921).

91280134294039 is a wasteful number, since it uses less digits than its factorization.

91280134294039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226344738920.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 91280134294039 in words is "ninety-one trillion, two hundred eighty billion, one hundred thirty-four million, two hundred ninety-four thousand, thirty-nine".