15243355768816 has 20 divisors (see below), whose sum is σ = 33753144916912. Its totient is φ = 6532866758016.

The previous prime is 15243355768807. The next prime is 15243355768831. The reversal of 15243355768816 is 61886755334251.

It is a super-3 number, since 3×15243355768816³ (a number of 41 digits) contains 333 as substring.

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, 68050695285 + ... + 68050695508.

Almost surely, 2^{15243355768816} is an apocalyptic number.

15243355768816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15243355768816 is an abundant number, since it is smaller than the sum of its proper divisors (18509789148096).

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

15243355768816 is a wasteful number, since it uses less digits than its factorization.

15243355768816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136101390808 (or 136101390802 counting only the distinct ones).

The product of its digits is 145152000, while the sum is 64.

The spelling of 15243355768816 in words is "fifteen trillion, two hundred forty-three billion, three hundred fifty-five million, seven hundred sixty-eight thousand, eight hundred sixteen".