12016641544 has 32 divisors (see below), whose sum is σ = 23006716920. Its totient is φ = 5882720256.

The previous prime is 12016641541. The next prime is 12016641551. The reversal of 12016641544 is 44514661021.

It can be written as a sum of positive squares in 4 ways, for example, as 9368304100 + 2648337444 = 96790^2 + 51462^2 .

It is not an unprimeable number, because it can be changed into a prime (12016641541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4912 + ... + 155104.

Almost surely, 2^12016641544 is an apocalyptic number.

It is an amenable number.

12016641544 is a deficient number, since it is larger than the sum of its proper divisors (10990075376).

12016641544 is a wasteful number, since it uses less digits than its factorization.

12016641544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150409 (or 150405 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 12016641544 in words is "twelve billion, sixteen million, six hundred forty-one thousand, five hundred forty-four".