16955644655951 has 2 divisors, whose sum is σ = 16955644655952. Its totient is φ = 16955644655950.

The previous prime is 16955644655881. The next prime is 16955644656001. The reversal of 16955644655951 is 15955644655961.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16955644655951 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16955644655051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8477822327975 + 8477822327976.

It is an arithmetic number, because the mean of its divisors is an integer number (8477822327976).

Almost surely, 2^{16955644655951} is an apocalyptic number.

16955644655951 is a deficient number, since it is larger than the sum of its proper divisors (1).

16955644655951 is an equidigital number, since it uses as much as digits as its factorization.

16955644655951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 874800000, while the sum is 71.

The spelling of 16955644655951 in words is "sixteen trillion, nine hundred fifty-five billion, six hundred forty-four million, six hundred fifty-five thousand, nine hundred fifty-one".