100542005555 has 4 divisors (see below), whose sum is σ = 120650406672. Its totient is φ = 80433604440.

The previous prime is 100542005521. The next prime is 100542005573. The reversal of 100542005555 is 555500245001.

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

It is not a de Polignac number, because 100542005555 - 2¹² = 100542001459 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, 10054200551 + ... + 10054200560.

It is an arithmetic number, because the mean of its divisors is an integer number (30162601668).

Almost surely, 2^100542005555 is an apocalyptic number.

100542005555 is a deficient number, since it is larger than the sum of its proper divisors (20108401117).

100542005555 is an equidigital number, since it uses as much as digits as its factorization.

100542005555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20108401116.

The product of its (nonzero) digits is 25000, while the sum is 32.

The spelling of 100542005555 in words is "one hundred billion, five hundred forty-two million, five thousand, five hundred fifty-five".