16984091577 has 4 divisors (see below), whose sum is σ = 22645455440. Its totient is φ = 11322727716.

The previous prime is 16984091573. The next prime is 16984091633. The reversal of 16984091577 is 77519048961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16984091577 - 2² = 16984091573 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16984091573) 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, 2830681927 + ... + 2830681932.

It is an arithmetic number, because the mean of its divisors is an integer number (5661363860).

Almost surely, 2^16984091577 is an apocalyptic number.

It is an amenable number.

16984091577 is a deficient number, since it is larger than the sum of its proper divisors (5661363863).

16984091577 is an equidigital number, since it uses as much as digits as its factorization.

16984091577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5661363862.

The product of its (nonzero) digits is 3810240, while the sum is 57.

The spelling of 16984091577 in words is "sixteen billion, nine hundred eighty-four million, ninety-one thousand, five hundred seventy-seven".