16165887744 has 36 divisors (see below), whose sum is σ = 43024838696. Its totient is φ = 5388628992.

The previous prime is 16165887721. The next prime is 16165887761. The reversal of 16165887744 is 44778856161.

It is a super-2 number, since 2×16165887744² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10523899 + ... + 10525434.

Almost surely, 2^16165887744 is an apocalyptic number.

It is an amenable number.

16165887744 is an abundant number, since it is smaller than the sum of its proper divisors (26858950952).

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

16165887744 is an equidigital number, since it uses as much as digits as its factorization.

16165887744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21049352 (or 21049338 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 57.

The spelling of 16165887744 in words is "sixteen billion, one hundred sixty-five million, eight hundred eighty-seven thousand, seven hundred forty-four".