91280134294040 has 32 divisors (see below), whose sum is σ = 205382663862480. Its totient is φ = 36511633859712.

The previous prime is 91280134294033. The next prime is 91280134294043. The reversal of 91280134294040 is 4049243108219.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91280134294043) 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 7 ways as a sum of consecutive naturals, for example, 9586814 + ... + 16567053.

Almost surely, 2^{91280134294040} is an apocalyptic number.

It is an amenable number.

91280134294040 is an abundant number, since it is smaller than the sum of its proper divisors (114102529568440).

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

91280134294040 is a wasteful number, since it uses less digits than its factorization.

91280134294040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26241131 (or 26241127 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 91280134294040 in words is "ninety-one trillion, two hundred eighty billion, one hundred thirty-four million, two hundred ninety-four thousand, forty".