16957784099 has 4 divisors (see below), whose sum is σ = 17318588064. Its totient is φ = 16596980136.

The previous prime is 16957783981. The next prime is 16957784117. The reversal of 16957784099 is 99048775961.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16957784099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16957784299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180401912 + ... + 180402005.

It is an arithmetic number, because the mean of its divisors is an integer number (4329647016).

Almost surely, 2^16957784099 is an apocalyptic number.

16957784099 is a deficient number, since it is larger than the sum of its proper divisors (360803965).

16957784099 is an equidigital number, since it uses as much as digits as its factorization.

16957784099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360803964.

The product of its (nonzero) digits is 34292160, while the sum is 65.

The spelling of 16957784099 in words is "sixteen billion, nine hundred fifty-seven million, seven hundred eighty-four thousand, ninety-nine".