15871572872881 has 8 divisors (see below), whose sum is σ = 17414526622464. Its totient is φ = 14345299704720.

The previous prime is 15871572872873. The next prime is 15871572872893. The reversal of 15871572872881 is 18827827517851.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15871572872881 - 2³ = 15871572872873 is a prime.

It is a super-2 number, since 2×15871572872881² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15871572872881.

It is not an unprimeable number, because it can be changed into a prime (15871572875881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4170143361 + ... + 4170147166.

It is an arithmetic number, because the mean of its divisors is an integer number (2176815827808).

Almost surely, 2^{15871572872881} is an apocalyptic number.

15871572872881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15871572872881 is a deficient number, since it is larger than the sum of its proper divisors (1542953749583).

15871572872881 is a wasteful number, since it uses less digits than its factorization.

15871572872881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8340290711.

The product of its digits is 140492800, while the sum is 70.

The spelling of 15871572872881 in words is "fifteen trillion, eight hundred seventy-one billion, five hundred seventy-two million, eight hundred seventy-two thousand, eight hundred eighty-one".