55505555555505 has 64 divisors (see below), whose sum is σ = 97225005846528. Its totient is φ = 26816687573760.

The previous prime is 55505555555491. The next prime is 55505555555537. The reversal of 55505555555505 is 50555555550555.

It is not a de Polignac number, because 55505555555505 - 2⁸ = 55505555555249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 138250884 + ... + 138651786.

It is an arithmetic number, because the mean of its divisors is an integer number (1519140716352).

Almost surely, 2^{55505555555505} is an apocalyptic number.

55505555555505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55505555555505 is a deficient number, since it is larger than the sum of its proper divisors (41719450291023).

55505555555505 is a wasteful number, since it uses less digits than its factorization.

55505555555505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403886.

The product of its (nonzero) digits is 244140625, while the sum is 60.

The spelling of 55505555555505 in words is "fifty-five trillion, five hundred five billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred five".