15243405555555 has 48 divisors (see below), whose sum is σ = 27571806699840. Its totient is φ = 7776028617984.

The previous prime is 15243405555529. The next prime is 15243405555589. The reversal of 15243405555555 is 55555550434251.

15243405555555 is a `hidden beast` number, since 1 + 5 + 2 + 4 + 34 + 0 + 5 + 5 + 55 + 555 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-15243405555555 is a prime.

It is a super-2 number, since 2×15243405555555² (a number of 27 digits) contains 22 as substring.

15243405555555 is a modest number, since divided by 5555555 gives 1524340 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26196837 + ... + 26772393.

It is an arithmetic number, because the mean of its divisors is an integer number (574412639580).

Almost surely, 2^{15243405555555} is an apocalyptic number.

15243405555555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15243405555555 is a deficient number, since it is larger than the sum of its proper divisors (12328401144285).

15243405555555 is a wasteful number, since it uses less digits than its factorization.

15243405555555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601180 (or 601177 counting only the distinct ones).

The product of its (nonzero) digits is 37500000, while the sum is 54.

The spelling of 15243405555555 in words is "fifteen trillion, two hundred forty-three billion, four hundred five million, five hundred fifty-five thousand, five hundred fifty-five".