12042643311 has 48 divisors (see below), whose sum is σ = 18682915680. Its totient is φ = 7448094720.

The previous prime is 12042643303. The next prime is 12042643313. The reversal of 12042643311 is 11334624021.

It is a happy number.

12042643311 is a `hidden beast` number, since 1 + 2 + 0 + 4 + 2 + 643 + 3 + 11 = 666.

It is not a de Polignac number, because 12042643311 - 2³ = 12042643303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12042643313) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5077956 + ... + 5080326.

It is an arithmetic number, because the mean of its divisors is an integer number (389227410).

Almost surely, 2^12042643311 is an apocalyptic number.

12042643311 is a deficient number, since it is larger than the sum of its proper divisors (6640272369).

12042643311 is a wasteful number, since it uses less digits than its factorization.

12042643311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856 (or 2853 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 12042643311 in words is "twelve billion, forty-two million, six hundred forty-three thousand, three hundred eleven".