11945981304 has 64 divisors (see below), whose sum is σ = 33194148000. Its totient is φ = 3980689920.

The previous prime is 11945981261. The next prime is 11945981363. The reversal of 11945981304 is 40318954911.

11945981304 is a `hidden beast` number, since 119 + 459 + 81 + 3 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 11945981304.

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, 832914 + ... + 847134.

Almost surely, 2^11945981304 is an apocalyptic number.

It is an amenable number.

11945981304 is an abundant number, since it is smaller than the sum of its proper divisors (21248166696).

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

11945981304 is a wasteful number, since it uses less digits than its factorization.

11945981304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18125 (or 18115 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 11945981304 in words is "eleven billion, nine hundred forty-five million, nine hundred eighty-one thousand, three hundred four".