55055002780055 has 32 divisors (see below), whose sum is σ = 67833791625600. Its totient is φ = 42870458695680.

The previous prime is 55055002780051. The next prime is 55055002780061. The reversal of 55055002780055 is 55008720055055.

It is not a de Polignac number, because 55055002780055 - 2² = 55055002780051 is a prime.

It is a super-2 number, since 2×55055002780055² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55055002779991 and 55055002780009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55055002780051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1789983737 + ... + 1790014493.

It is an arithmetic number, because the mean of its divisors is an integer number (2119805988300).

Almost surely, 2^{55055002780055} is an apocalyptic number.

55055002780055 is a deficient number, since it is larger than the sum of its proper divisors (12778788845545).

55055002780055 is a wasteful number, since it uses less digits than its factorization.

55055002780055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50699.

The product of its (nonzero) digits is 1750000, while the sum is 47.

The spelling of 55055002780055 in words is "fifty-five trillion, fifty-five billion, two million, seven hundred eighty thousand, fifty-five".