55550505505505 has 16 divisors (see below), whose sum is σ = 67337241570000. Its totient is φ = 43989531801600.

The previous prime is 55550505505471. The next prime is 55550505505507. The reversal of 55550505505505 is 50550550505555.

It can be written as a sum of positive squares in 8 ways, for example, as 8907383506576 + 46643121998929 = 2984524^2 + 6829577^2 .

It is not a de Polignac number, because 55550505505505 - 2⁸ = 55550505505249 is a prime.

55550505505505 is a modest number, since divided by 505505505 gives 55550 as remainder.

It is not an unprimeable number, because it can be changed into a prime (55550505505507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11538980 + ... + 15628469.

It is an arithmetic number, because the mean of its divisors is an integer number (4208577598125).

Almost surely, 2^{55550505505505} is an apocalyptic number.

It is an amenable number.

55550505505505 is a deficient number, since it is larger than the sum of its proper divisors (11786736064495).

55550505505505 is a wasteful number, since it uses less digits than its factorization.

55550505505505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27171604.

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

The spelling of 55550505505505 in words is "fifty-five trillion, five hundred fifty billion, five hundred five million, five hundred five thousand, five hundred five".