55555505505505 has 8 divisors (see below), whose sum is σ = 67091234675112. Its totient is φ = 44161319025408.

The previous prime is 55555505505503. The next prime is 55555505505509. The reversal of 55555505505505 is 50550550555555.

55555505505505 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 759254307904 + 54796251197601 = 871352^2 + 7402449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55555505505505 - 2¹ = 55555505505503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55555505505503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35385671512 + ... + 35385673081.

It is an arithmetic number, because the mean of its divisors is an integer number (8386404334389).

Almost surely, 2^{55555505505505} is an apocalyptic number.

It is an amenable number.

55555505505505 is a deficient number, since it is larger than the sum of its proper divisors (11535729169607).

55555505505505 is a wasteful number, since it uses less digits than its factorization.

55555505505505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70771344755.

The product of its (nonzero) digits is 48828125, while the sum is 55.

The spelling of 55555505505505 in words is "fifty-five trillion, five hundred fifty-five billion, five hundred five million, five hundred five thousand, five hundred five".