9955669943959 has 2 divisors, whose sum is σ = 9955669943960. Its totient is φ = 9955669943958.

The previous prime is 9955669943783. The next prime is 9955669943981. The reversal of 9955669943959 is 9593499665599.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9955669943959 - 2¹⁷ = 9955669812887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9955669943959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9955669943759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4977834971979 + 4977834971980.

It is an arithmetic number, because the mean of its divisors is an integer number (4977834971980).

Almost surely, 2^{9955669943959} is an apocalyptic number.

9955669943959 is a deficient number, since it is larger than the sum of its proper divisors (1).

9955669943959 is an equidigital number, since it uses as much as digits as its factorization.

9955669943959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28697814000, while the sum is 88.

The spelling of 9955669943959 in words is "nine trillion, nine hundred fifty-five billion, six hundred sixty-nine million, nine hundred forty-three thousand, nine hundred fifty-nine".