55555555558055 has 16 divisors (see below), whose sum is σ = 76450511962944. Its totient is φ = 37965220212480.

The previous prime is 55555555558049. The next prime is 55555555558067. The reversal of 55555555558055 is 55085555555555.

It is not a de Polignac number, because 55555555558055 - 2¹⁴ = 55555555541671 is a prime.

It is a super-4 number, since 4×55555555558055⁴ (a number of 56 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2708695526 + ... + 2708716035.

It is an arithmetic number, because the mean of its divisors is an integer number (4778156997684).

Almost surely, 2^{55555555558055} is an apocalyptic number.

55555555558055 is a deficient number, since it is larger than the sum of its proper divisors (20894956404889).

55555555558055 is a wasteful number, since it uses less digits than its factorization.

55555555558055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5417411866.

The product of its (nonzero) digits is 1953125000, while the sum is 68.

The spelling of 55555555558055 in words is "fifty-five trillion, five hundred fifty-five billion, five hundred fifty-five million, five hundred fifty-eight thousand, fifty-five".