11984545944 has 128 divisors (see below), whose sum is σ = 40048704000. Its totient is φ = 3243929472.

The previous prime is 11984545943. The next prime is 11984545973. The reversal of 11984545944 is 44954548911.

11984545944 is a `hidden beast` number, since 1 + 1 + 9 + 8 + 4 + 545 + 94 + 4 = 666.

It is a super-2 number, since 2×11984545944² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11984545943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179859 + ... + 237314.

It is an arithmetic number, because the mean of its divisors is an integer number (312880500).

Almost surely, 2^11984545944 is an apocalyptic number.

11984545944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11984545944 is an abundant number, since it is smaller than the sum of its proper divisors (28064158056).

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

11984545944 is a wasteful number, since it uses less digits than its factorization.

11984545944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417214 (or 417204 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The spelling of 11984545944 in words is "eleven billion, nine hundred eighty-four million, five hundred forty-five thousand, nine hundred forty-four".