15545656068804 has 81 divisors (see below), whose sum is σ = 41080205437999. Its totient is φ = 4956412509840.

The previous prime is 15545656068737. The next prime is 15545656068823. The reversal of 15545656068804 is 40886065654551.

The square root of 15545656068804 is 3942798.

It is a perfect power (a square), and thus also a powerful number.

15545656068804 is a `hidden beast` number, since 1 + 5 + 5 + 4 + 5 + 6 + 560 + 68 + 8 + 0 + 4 = 666.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 544091839 + ... + 544120409.

Almost surely, 2^{15545656068804} is an apocalyptic number.

15545656068804 is the 3942798-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15545656068804

15545656068804 is an abundant number, since it is smaller than the sum of its proper divisors (25534549369195).

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

15545656068804 is an frugal number, since it uses more digits than its factorization.

15545656068804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57198 (or 28599 counting only the distinct ones).

The product of its (nonzero) digits is 138240000, while the sum is 63.

The spelling of 15545656068804 in words is "fifteen trillion, five hundred forty-five billion, six hundred fifty-six million, sixty-eight thousand, eight hundred four".