16570940309 has 8 divisors (see below), whose sum is σ = 20659873728. Its totient is φ = 12912420960.

The previous prime is 16570940279. The next prime is 16570940311. The reversal of 16570940309 is 90304907561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16570940309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16570940309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16570940329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107603432 + ... + 107603585.

It is an arithmetic number, because the mean of its divisors is an integer number (2582484216).

Almost surely, 2^16570940309 is an apocalyptic number.

It is an amenable number.

16570940309 is a deficient number, since it is larger than the sum of its proper divisors (4088933419).

16570940309 is a wasteful number, since it uses less digits than its factorization.

16570940309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215207035.

The product of its (nonzero) digits is 204120, while the sum is 44.

The spelling of 16570940309 in words is "sixteen billion, five hundred seventy million, nine hundred forty thousand, three hundred nine".