100506550555 has 4 divisors (see below), whose sum is σ = 120607860672. Its totient is φ = 80405240440.

The previous prime is 100506550541. The next prime is 100506550579. The reversal of 100506550555 is 555055605001.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 100506550555 - 2²³ = 100498161947 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10050655051 + ... + 10050655060.

It is an arithmetic number, because the mean of its divisors is an integer number (30151965168).

Almost surely, 2^100506550555 is an apocalyptic number.

100506550555 is a deficient number, since it is larger than the sum of its proper divisors (20101310117).

100506550555 is an equidigital number, since it uses as much as digits as its factorization.

100506550555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20101310116.

The product of its (nonzero) digits is 93750, while the sum is 37.

The spelling of 100506550555 in words is "one hundred billion, five hundred six million, five hundred fifty thousand, five hundred fifty-five".