100505110055 has 24 divisors (see below), whose sum is σ = 142596900000. Its totient is φ = 67787979840.

The previous prime is 100505110051. The next prime is 100505110067. The reversal of 100505110055 is 550011505001.

It is a happy number.

It is not a de Polignac number, because 100505110055 - 2² = 100505110051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100505110055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100505110051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3347555 + ... + 3377444.

It is an arithmetic number, because the mean of its divisors is an integer number (5941537500).

Almost surely, 2^100505110055 is an apocalyptic number.

100505110055 is a deficient number, since it is larger than the sum of its proper divisors (42091789945).

100505110055 is an equidigital number, since it uses as much as digits as its factorization.

100505110055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6725079 (or 6725072 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 23.

Adding to 100505110055 its reverse (550011505001), we get a palindrome (650516615056).

The spelling of 100505110055 in words is "one hundred billion, five hundred five million, one hundred ten thousand, fifty-five".