15709872211868 has 12 divisors (see below), whose sum is σ = 28939238285160. Its totient is φ = 7441518416112.

The previous prime is 15709872211799. The next prime is 15709872211889. The reversal of 15709872211868 is 86811227890751.

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, 103354422371 + ... + 103354422522.

It is an arithmetic number, because the mean of its divisors is an integer number (2411603190430).

Almost surely, 2^{15709872211868} is an apocalyptic number.

It is an amenable number.

15709872211868 is a deficient number, since it is larger than the sum of its proper divisors (13229366073292).

15709872211868 is a wasteful number, since it uses less digits than its factorization.

15709872211868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206708844916 (or 206708844914 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 65.

The spelling of 15709872211868 in words is "fifteen trillion, seven hundred nine billion, eight hundred seventy-two million, two hundred eleven thousand, eight hundred sixty-eight".