16163456515553 has 8 divisors (see below), whose sum is σ = 16625944321536. Its totient is φ = 15704904776400.

The previous prime is 16163456515543. The next prime is 16163456515567. The reversal of 16163456515553 is 35551565436161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16163456515553 - 2⁴⁰ = 15063944887777 is a prime.

It is a super-2 number, since 2×16163456515553² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16163456515543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 984008378 + ... + 984024803.

It is an arithmetic number, because the mean of its divisors is an integer number (2078243040192).

Almost surely, 2^{16163456515553} is an apocalyptic number.

It is an amenable number.

16163456515553 is a deficient number, since it is larger than the sum of its proper divisors (462487805983).

16163456515553 is a wasteful number, since it uses less digits than its factorization.

16163456515553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968033415.

The product of its digits is 24300000, while the sum is 56.

The spelling of 16163456515553 in words is "sixteen trillion, one hundred sixty-three billion, four hundred fifty-six million, five hundred fifteen thousand, five hundred fifty-three".