55555555500505 has 8 divisors (see below), whose sum is σ = 66707391513672. Its totient is φ = 44417294458368.

The previous prime is 55555555500499. The next prime is 55555555500539. The reversal of 55555555500505 is 50500555555555.

It can be written as a sum of positive squares in 4 ways, for example, as 1492240594329 + 54063314906176 = 1221573^2 + 7352776^2 .

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 55555555500505 - 2¹⁹ = 55555554976217 is a prime.

It is a super-2 number, since 2×55555555500505² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3393733752 + ... + 3393750121.

It is an arithmetic number, because the mean of its divisors is an integer number (8338423939209).

Almost surely, 2^{55555555500505} is an apocalyptic number.

It is an amenable number.

55555555500505 is a deficient number, since it is larger than the sum of its proper divisors (11151836013167).

55555555500505 is a wasteful number, since it uses less digits than its factorization.

55555555500505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6787485515.

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

The spelling of 55555555500505 in words is "fifty-five trillion, five hundred fifty-five billion, five hundred fifty-five million, five hundred thousand, five hundred five".