12646562142 has 16 divisors (see below), whose sum is σ = 25294781952. Its totient is φ = 4215244440.

The previous prime is 12646562119. The next prime is 12646562209. The reversal of 12646562142 is 24126564621.

It is a super-2 number, since 2×12646562142² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12646562142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44467 + ... + 165137.

It is an arithmetic number, because the mean of its divisors is an integer number (1580923872).

Almost surely, 2^12646562142 is an apocalyptic number.

12646562142 is an abundant number, since it is smaller than the sum of its proper divisors (12648219810).

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

12646562142 is a wasteful number, since it uses less digits than its factorization.

12646562142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138143.

The product of its digits is 138240, while the sum is 39.

The spelling of 12646562142 in words is "twelve billion, six hundred forty-six million, five hundred sixty-two thousand, one hundred forty-two".