11491922880 has 84 divisors (see below), whose sum is σ = 39527436312. Its totient is φ = 3064512000.

The previous prime is 11491922857. The next prime is 11491922891. The reversal of 11491922880 is 8822919411.

11491922880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1992246 + ... + 1998005.

It is an arithmetic number, because the mean of its divisors is an integer number (470564718).

Almost surely, 2^11491922880 is an apocalyptic number.

11491922880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11491922880 is an abundant number, since it is smaller than the sum of its proper divisors (28035513432).

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

11491922880 is a wasteful number, since it uses less digits than its factorization.

11491922880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990274 (or 3990261 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The spelling of 11491922880 in words is "eleven billion, four hundred ninety-one million, nine hundred twenty-two thousand, eight hundred eighty".