55555605561055 has 8 divisors (see below), whose sum is σ = 66667540640112. Its totient is φ = 44443941804288.

The previous prime is 55555605561017. The next prime is 55555605561061. The reversal of 55555605561055 is 55016550655555.

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 55555605561055 - 2²³ = 55555597172447 is a prime.

It is a Duffinian number.

It is a congruent 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, 67379829 + ... + 68199358.

It is an arithmetic number, because the mean of its divisors is an integer number (8333442580014).

Almost surely, 2^{55555605561055} is an apocalyptic number.

55555605561055 is a deficient number, since it is larger than the sum of its proper divisors (11111935079057).

55555605561055 is a wasteful number, since it uses less digits than its factorization.

55555605561055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135661145.

The product of its (nonzero) digits is 70312500, while the sum is 58.

The spelling of 55555605561055 in words is "fifty-five trillion, five hundred fifty-five billion, six hundred five million, five hundred sixty-one thousand, fifty-five".