16201345256 has 16 divisors (see below), whose sum is σ = 30402098340. Its totient is φ = 8094119040.

The previous prime is 16201345249. The next prime is 16201345393. The reversal of 16201345256 is 65254310261.

It can be written as a sum of positive squares in 2 ways, for example, as 16151868100 + 49477156 = 127090^2 + 7034^2 .

It is a super-2 number, since 2×16201345256² (a number of 21 digits) contains 22 as substring.

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, 808685 + ... + 828476.

Almost surely, 2^16201345256 is an apocalyptic number.

It is an amenable number.

16201345256 is a deficient number, since it is larger than the sum of its proper divisors (14200753084).

16201345256 is a wasteful number, since it uses less digits than its factorization.

16201345256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638404 (or 1638400 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 16201345256 in words is "sixteen billion, two hundred one million, three hundred forty-five thousand, two hundred fifty-six".