16163554320 has 80 divisors (see below), whose sum is σ = 55674472320. Its totient is φ = 4310280576.

The previous prime is 16163554307. The next prime is 16163554327. The reversal of 16163554320 is 2345536161.

16163554320 is a `hidden beast` number, since 1 + 61 + 6 + 35 + 543 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×16163554320² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (16163554327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3739404 + ... + 3743723.

It is an arithmetic number, because the mean of its divisors is an integer number (695930904).

Almost surely, 2^16163554320 is an apocalyptic number.

16163554320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16163554320 is an abundant number, since it is smaller than the sum of its proper divisors (39510918000).

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

16163554320 is a wasteful number, since it uses less digits than its factorization.

16163554320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7483149 (or 7483137 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 16163554320 in words is "sixteen billion, one hundred sixty-three million, five hundred fifty-four thousand, three hundred twenty".