18568371412 has 12 divisors (see below), whose sum is σ = 33372884020. Its totient is φ = 9033261696.

The previous prime is 18568371403. The next prime is 18568371421. The reversal of 18568371412 is 21417386581.

It is an interprime number because it is at equal distance from previous prime (18568371403) and next prime (18568371421).

It can be written as a sum of positive squares in 2 ways, for example, as 8384332356 + 10184039056 = 91566^2 + 100916^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62730837 + ... + 62731132.

Almost surely, 2^18568371412 is an apocalyptic number.

It is an amenable number.

18568371412 is a deficient number, since it is larger than the sum of its proper divisors (14804512608).

18568371412 is a wasteful number, since it uses less digits than its factorization.

18568371412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125462010 (or 125462008 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The spelling of 18568371412 in words is "eighteen billion, five hundred sixty-eight million, three hundred seventy-one thousand, four hundred twelve".