16994961593 has 4 divisors (see below), whose sum is σ = 17015917968. Its totient is φ = 16974005220.

The previous prime is 16994961587. The next prime is 16994961601. The reversal of 16994961593 is 39516949961.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16994961593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16994961493) 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, 10476971 + ... + 10478592.

It is an arithmetic number, because the mean of its divisors is an integer number (4253979492).

Almost surely, 2^16994961593 is an apocalyptic number.

It is an amenable number.

16994961593 is a deficient number, since it is larger than the sum of its proper divisors (20956375).

16994961593 is an equidigital number, since it uses as much as digits as its factorization.

16994961593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20956374.

The product of its digits is 14171760, while the sum is 62.

The spelling of 16994961593 in words is "sixteen billion, nine hundred ninety-four million, nine hundred sixty-one thousand, five hundred ninety-three".