16432313409 has 6 divisors (see below), whose sum is σ = 23735563826. Its totient is φ = 10954875600.

The previous prime is 16432313363. The next prime is 16432313411. The reversal of 16432313409 is 90431323461.

16432313409 is a `hidden beast` number, since 1 + 643 + 2 + 3 + 1 + 3 + 4 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12204062784 + 4228250625 = 110472^2 + 65025^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16432313409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16432313449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 912906292 + ... + 912906309.

Almost surely, 2^16432313409 is an apocalyptic number.

It is an amenable number.

16432313409 is a deficient number, since it is larger than the sum of its proper divisors (7303250417).

16432313409 is a wasteful number, since it uses less digits than its factorization.

16432313409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825812607 (or 1825812604 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The spelling of 16432313409 in words is "sixteen billion, four hundred thirty-two million, three hundred thirteen thousand, four hundred nine".