16115566554564 has 48 divisors (see below), whose sum is σ = 38495137739520. Its totient is φ = 5244520327200.

The previous prime is 16115566554541. The next prime is 16115566554601. The reversal of 16115566554564 is 46545566551161.

16115566554564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16115566554564² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16115566554498 and 16115566554507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6042162 + ... + 8290889.

It is an arithmetic number, because the mean of its divisors is an integer number (801982036240).

Almost surely, 2^{16115566554564} is an apocalyptic number.

It is an amenable number.

16115566554564 is an abundant number, since it is smaller than the sum of its proper divisors (22379571184956).

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

16115566554564 is a wasteful number, since it uses less digits than its factorization.

16115566554564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14335280 (or 14335278 counting only the distinct ones).

The product of its digits is 64800000, while the sum is 60.

The spelling of 16115566554564 in words is "sixteen trillion, one hundred fifteen billion, five hundred sixty-six million, five hundred fifty-four thousand, five hundred sixty-four".