91280088088 has 64 divisors (see below), whose sum is σ = 196219584000. Its totient is φ = 38996385792.

The previous prime is 91280088079. The next prime is 91280088157. The reversal of 91280088088 is 88088008219.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27418008 + ... + 27421336.

It is an arithmetic number, because the mean of its divisors is an integer number (3065931000).

Almost surely, 2^91280088088 is an apocalyptic number.

It is an amenable number.

91280088088 is an abundant number, since it is smaller than the sum of its proper divisors (104939495912).

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

91280088088 is a wasteful number, since it uses less digits than its factorization.

91280088088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4744 (or 4740 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 52.

The spelling of 91280088088 in words is "ninety-one billion, two hundred eighty million, eighty-eight thousand, eighty-eight".