15142865871 has 32 divisors (see below), whose sum is σ = 23877504000. Its totient is φ = 8531150880.

The previous prime is 15142865869. The next prime is 15142865891. The reversal of 15142865871 is 17856824151.

It is not a de Polignac number, because 15142865871 - 2¹ = 15142865869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15142865871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15142865891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30576 + ... + 176693.

It is an arithmetic number, because the mean of its divisors is an integer number (746172000).

Almost surely, 2^15142865871 is an apocalyptic number.

15142865871 is a deficient number, since it is larger than the sum of its proper divisors (8734638129).

15142865871 is an equidigital number, since it uses as much as digits as its factorization.

15142865871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207364 (or 207350 counting only the distinct ones).

The product of its digits is 537600, while the sum is 48.

The spelling of 15142865871 in words is "fifteen billion, one hundred forty-two million, eight hundred sixty-five thousand, eight hundred seventy-one".