55555050505505 has 16 divisors (see below), whose sum is σ = 67336772295744. Its totient is φ = 43997038516800.

The previous prime is 55555050505499. The next prime is 55555050505553. The reversal of 55555050505505 is 50550505055555.

It is not a de Polignac number, because 55555050505505 - 2¹² = 55555050501409 is a prime.

It is a super-2 number, since 2×55555050505505² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5506079 + ... + 11892308.

It is an arithmetic number, because the mean of its divisors is an integer number (4208548268484).

Almost surely, 2^{55555050505505} is an apocalyptic number.

It is an amenable number.

55555050505505 is a deficient number, since it is larger than the sum of its proper divisors (11781721790239).

55555050505505 is a wasteful number, since it uses less digits than its factorization.

55555050505505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17404816.

The product of its (nonzero) digits is 9765625, while the sum is 50.

The spelling of 55555050505505 in words is "fifty-five trillion, five hundred fifty-five billion, fifty million, five hundred five thousand, five hundred five".