55187018855187 has 32 divisors (see below), whose sum is σ = 74230299264000. Its totient is φ = 36469398631680.

The previous prime is 55187018855123. The next prime is 55187018855219. The reversal of 55187018855187 is 78155881078155.

55187018855187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55187018855187 - 2⁶ = 55187018855123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55187018856187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125804989 + ... + 126242897.

It is an arithmetic number, because the mean of its divisors is an integer number (2319696852000).

Almost surely, 2^{55187018855187} is an apocalyptic number.

55187018855187 is a deficient number, since it is larger than the sum of its proper divisors (19043280408813).

55187018855187 is a wasteful number, since it uses less digits than its factorization.

55187018855187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438971.

The product of its (nonzero) digits is 125440000, while the sum is 69.

The spelling of 55187018855187 in words is "fifty-five trillion, one hundred eighty-seven billion, eighteen million, eight hundred fifty-five thousand, one hundred eighty-seven".