12111504544 has 12 divisors (see below), whose sum is σ = 23844524634. Its totient is φ = 6055752256.

The previous prime is 12111504529. The next prime is 12111504547. The reversal of 12111504544 is 44540511121.

It can be written as a sum of positive squares in only one way, i.e., 12095600400 + 15904144 = 109980^2 + 3988^2 .

It is not an unprimeable number, because it can be changed into a prime (12111504547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189242227 + ... + 189242290.

Almost surely, 2^12111504544 is an apocalyptic number.

It is an amenable number.

12111504544 is a deficient number, since it is larger than the sum of its proper divisors (11733020090).

12111504544 is an equidigital number, since it uses as much as digits as its factorization.

12111504544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378484527 (or 378484519 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The spelling of 12111504544 in words is "twelve billion, one hundred eleven million, five hundred four thousand, five hundred forty-four".