100555055550505 has 4 divisors (see below), whose sum is σ = 120666066660612. Its totient is φ = 80444044440400.

The previous prime is 100555055550451. The next prime is 100555055550529. The reversal of 100555055550505 is 505055550555001.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 42226811182656 + 58328244367849 = 6498216^2 + 7637293^2 .

It is not a de Polignac number, because 100555055550505 - 2¹⁵ = 100555055517737 is a prime.

It is a super-2 number, since 2×100555055550505² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10055505555046 + ... + 10055505555055.

It is an arithmetic number, because the mean of its divisors is an integer number (30166516665153).

Almost surely, 2^{100555055550505} is an apocalyptic number.

It is an amenable number.

100555055550505 is a deficient number, since it is larger than the sum of its proper divisors (20111011110107).

100555055550505 is an equidigital number, since it uses as much as digits as its factorization.

100555055550505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20111011110106.

The product of its (nonzero) digits is 1953125, while the sum is 46.

The spelling of 100555055550505 in words is "one hundred trillion, five hundred fifty-five billion, fifty-five million, five hundred fifty thousand, five hundred five".