16956408609859 has 2 divisors, whose sum is σ = 16956408609860. Its totient is φ = 16956408609858.

The previous prime is 16956408609839. The next prime is 16956408609863. The reversal of 16956408609859 is 95890680465961.

It is a strong prime.

It is an emirp because it is prime and its reverse (95890680465961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16956408609859 - 2²⁹ = 16955871738947 is a prime.

It is not a weakly prime, because it can be changed into another prime (16956408609839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8478204304929 + 8478204304930.

It is an arithmetic number, because the mean of its divisors is an integer number (8478204304930).

Almost surely, 2^{16956408609859} is an apocalyptic number.

16956408609859 is a deficient number, since it is larger than the sum of its proper divisors (1).

16956408609859 is an equidigital number, since it uses as much as digits as its factorization.

16956408609859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1007769600, while the sum is 76.

The spelling of 16956408609859 in words is "sixteen trillion, nine hundred fifty-six billion, four hundred eight million, six hundred nine thousand, eight hundred fifty-nine".