11801799807984 has 80 divisors (see below), whose sum is σ = 33895859811840. Its totient is φ = 3931573141440.

The previous prime is 11801799807977. The next prime is 11801799808021. The reversal of 11801799807984 is 48970899710811.

It is a Harshad number since it is a multiple of its sum of digits (72).

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, 7473912 + ... + 8914199.

It is an arithmetic number, because the mean of its divisors is an integer number (423698247648).

Almost surely, 2^{11801799807984} is an apocalyptic number.

It is an amenable number.

11801799807984 is an abundant number, since it is smaller than the sum of its proper divisors (22094060003856).

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

11801799807984 is a wasteful number, since it uses less digits than its factorization.

11801799807984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16389795 (or 16389783 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 72.

The spelling of 11801799807984 in words is "eleven trillion, eight hundred one billion, seven hundred ninety-nine million, eight hundred seven thousand, nine hundred eighty-four".