16956329161 has 4 divisors (see below), whose sum is σ = 16995671424. Its totient is φ = 16916986900.

The previous prime is 16956329153. The next prime is 16956329207. The reversal of 16956329161 is 16192365961.

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 not a de Polignac number, because 16956329161 - 2³ = 16956329153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16956329101) 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, 19670485 + ... + 19671346.

It is an arithmetic number, because the mean of its divisors is an integer number (4248917856).

Almost surely, 2^16956329161 is an apocalyptic number.

It is an amenable number.

16956329161 is a deficient number, since it is larger than the sum of its proper divisors (39342263).

16956329161 is an equidigital number, since it uses as much as digits as its factorization.

16956329161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39342262.

The product of its digits is 524880, while the sum is 49.

The spelling of 16956329161 in words is "sixteen billion, nine hundred fifty-six million, three hundred twenty-nine thousand, one hundred sixty-one".