15212886061868 has 12 divisors (see below), whose sum is σ = 29042782481832. Its totient is φ = 6914948209920.

The previous prime is 15212886061847. The next prime is 15212886061897. The reversal of 15212886061868 is 86816068821251.

It is a self number, because there is not a number n which added to its sum of digits gives 15212886061868.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172873705205 + ... + 172873705292.

It is an arithmetic number, because the mean of its divisors is an integer number (2420231873486).

Almost surely, 2^{15212886061868} is an apocalyptic number.

It is an amenable number.

15212886061868 is a deficient number, since it is larger than the sum of its proper divisors (13829896419964).

15212886061868 is a wasteful number, since it uses less digits than its factorization.

15212886061868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345747410512 (or 345747410510 counting only the distinct ones).

The product of its (nonzero) digits is 17694720, while the sum is 62.

The spelling of 15212886061868 in words is "fifteen trillion, two hundred twelve billion, eight hundred eighty-six million, sixty-one thousand, eight hundred sixty-eight".