55505549999959 has 2 divisors, whose sum is σ = 55505549999960. Its totient is φ = 55505549999958.

The previous prime is 55505549999951. The next prime is 55505550000001. The reversal of 55505549999959 is 95999994550555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55505549999959 - 2³ = 55505549999951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55505549999959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55505549999951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27752774999979 + 27752774999980.

It is an arithmetic number, because the mean of its divisors is an integer number (27752774999980).

Almost surely, 2^{55505549999959} is an apocalyptic number.

55505549999959 is a deficient number, since it is larger than the sum of its proper divisors (1).

55505549999959 is an equidigital number, since it uses as much as digits as its factorization.

55505549999959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33215062500, while the sum is 88.

The spelling of 55505549999959 in words is "fifty-five trillion, five hundred five billion, five hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred fifty-nine".