16312765328 has 20 divisors (see below), whose sum is σ = 31918916508. Its totient is φ = 8075625600.

The previous prime is 16312765319. The next prime is 16312765369. The reversal of 16312765328 is 82356721361.

It can be written as a sum of positive squares in 2 ways, for example, as 9156958864 + 7155806464 = 95692^2 + 84592^2 .

It is a super-2 number, since 2×16312765328² (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, 5045651 + ... + 5048882.

Almost surely, 2^16312765328 is an apocalyptic number.

It is an amenable number.

16312765328 is a deficient number, since it is larger than the sum of its proper divisors (15606151180).

16312765328 is a wasteful number, since it uses less digits than its factorization.

16312765328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10094642 (or 10094636 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The spelling of 16312765328 in words is "sixteen billion, three hundred twelve million, seven hundred sixty-five thousand, three hundred twenty-eight".