55120717252855 has 16 divisors (see below), whose sum is σ = 66267802368000. Its totient is φ = 44014628355840.

The previous prime is 55120717252819. The next prime is 55120717252907. The reversal of 55120717252855 is 55825271702155.

It is a happy number.

It is not a de Polignac number, because 55120717252855 - 2³³ = 55112127318263 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55120717252796 and 55120717252805.

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, 27331210 + ... + 29278600.

It is an arithmetic number, because the mean of its divisors is an integer number (4141737648000).

Almost surely, 2^{55120717252855} is an apocalyptic number.

55120717252855 is a deficient number, since it is larger than the sum of its proper divisors (11147085115145).

55120717252855 is a wasteful number, since it uses less digits than its factorization.

55120717252855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957914.

The product of its (nonzero) digits is 9800000, while the sum is 55.

The spelling of 55120717252855 in words is "fifty-five trillion, one hundred twenty billion, seven hundred seventeen million, two hundred fifty-two thousand, eight hundred fifty-five".