15166115545553 has 16 divisors (see below), whose sum is σ = 17665051453056. Its totient is φ = 12750414293760.

The previous prime is 15166115545517. The next prime is 15166115545571. The reversal of 15166115545553 is 35554551166151.

It is a cyclic number.

It is not a de Polignac number, because 15166115545553 - 2²² = 15166111351249 is a prime.

It is a super-2 number, since 2×15166115545553² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a junction number, because it is equal to n+sod(n) for n = 15166115545495 and 15166115545504.

It is not an unprimeable number, because it can be changed into a prime (15166115545753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4918088 + ... + 7383753.

It is an arithmetic number, because the mean of its divisors is an integer number (1104065715816).

Almost surely, 2^{15166115545553} is an apocalyptic number.

It is an amenable number.

15166115545553 is a deficient number, since it is larger than the sum of its proper divisors (2498935907503).

15166115545553 is a wasteful number, since it uses less digits than its factorization.

15166115545553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12305224.

The product of its digits is 6750000, while the sum is 53.

The spelling of 15166115545553 in words is "fifteen trillion, one hundred sixty-six billion, one hundred fifteen million, five hundred forty-five thousand, five hundred fifty-three".