16147775872 has 32 divisors (see below), whose sum is σ = 32954027400. Its totient is φ = 7876961280.

The previous prime is 16147775837. The next prime is 16147775909. The reversal of 16147775872 is 27857774161.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×16147775872² (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, 1533222 + ... + 1543717.

Almost surely, 2^16147775872 is an apocalyptic number.

It is an amenable number.

16147775872 is an abundant number, since it is smaller than the sum of its proper divisors (16806251528).

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

16147775872 is an equidigital number, since it uses as much as digits as its factorization.

16147775872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3076994 (or 3076982 counting only the distinct ones).

The product of its digits is 4609920, while the sum is 55.

The spelling of 16147775872 in words is "sixteen billion, one hundred forty-seven million, seven hundred seventy-five thousand, eight hundred seventy-two".