15142865868 has 48 divisors (see below), whose sum is σ = 42279230560. Its totient is φ = 4659342912.

The previous prime is 15142865867. The next prime is 15142865869. The reversal of 15142865868 is 86856824151.

15142865868 is a `hidden beast` number, since 1 + 51 + 4 + 2 + 8 + 6 + 586 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (15142865867) and next prime (15142865869).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (15142865863) 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, 5391355 + ... + 5394162.

Almost surely, 2^15142865868 is an apocalyptic number.

15142865868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

15142865868 is an abundant number, since it is smaller than the sum of its proper divisors (27136364692).

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

15142865868 is a wasteful number, since it uses less digits than its factorization.

15142865868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10785543 (or 10785535 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 54.

The spelling of 15142865868 in words is "fifteen billion, one hundred forty-two million, eight hundred sixty-five thousand, eight hundred sixty-eight".