12115531043 has 16 divisors (see below), whose sum is σ = 15352707840. Its totient is φ = 9285904800.

The previous prime is 12115531027. The next prime is 12115531133. The reversal of 12115531043 is 34013551121.

It is a cyclic number.

It is not a de Polignac number, because 12115531043 - 2⁴ = 12115531027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12115531003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1285013 + ... + 1294406.

It is an arithmetic number, because the mean of its divisors is an integer number (959544240).

Almost surely, 2^12115531043 is an apocalyptic number.

12115531043 is a deficient number, since it is larger than the sum of its proper divisors (3237176797).

12115531043 is a wasteful number, since it uses less digits than its factorization.

12115531043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579498.

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 12115531043 in words is "twelve billion, one hundred fifteen million, five hundred thirty-one thousand, forty-three".