55550005505505 has 60 divisors (see below), whose sum is σ = 115836247349460. Its totient is φ = 25394288222016.

The previous prime is 55550005505483. The next prime is 55550005505549. The reversal of 55550005505505 is 50550550005555.

It can be written as a sum of positive squares in 2 ways, for example, as 31281100888401 + 24268904617104 = 5592951^2 + 4926348^2 .

It is not a de Polignac number, because 55550005505505 - 2¹² = 55550005501409 is a prime.

It is a super-2 number, since 2×55550005505505² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1399577170 + ... + 1399616859.

It is an arithmetic number, because the mean of its divisors is an integer number (1930604122491).

Almost surely, 2^{55550005505505} is an apocalyptic number.

It is an amenable number.

55550005505505 is an abundant number, since it is smaller than the sum of its proper divisors (60286241843955).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55550005505505 is a wasteful number, since it uses less digits than its factorization.

55550005505505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799194060 (or 2799194044 counting only the distinct ones).

The product of its (nonzero) digits is 1953125, while the sum is 45.

The spelling of 55550005505505 in words is "fifty-five trillion, five hundred fifty billion, five million, five hundred five thousand, five hundred five".