16604271144 has 48 divisors (see below), whose sum is σ = 47615192820. Its totient is φ = 5209182720.

The previous prime is 16604271053. The next prime is 16604271169. The reversal of 16604271144 is 44117240661.

It is a happy number.

16604271144 is a `hidden beast` number, since 1 + 6 + 604 + 2 + 7 + 1 + 1 + 44 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13541976900 + 3062294244 = 116370^2 + 55338^2 .

It is a super-3 number, since 3×16604271144³ (a number of 32 digits) contains 333 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 16604271099 and 16604271108.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6781567 + ... + 6784014.

Almost surely, 2^16604271144 is an apocalyptic number.

It is an amenable number.

16604271144 is an abundant number, since it is smaller than the sum of its proper divisors (31010921676).

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

16604271144 is a wasteful number, since it uses less digits than its factorization.

16604271144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13565610 (or 13565603 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 16604271144 in words is "sixteen billion, six hundred four million, two hundred seventy-one thousand, one hundred forty-four".