100505534550555 has 64 divisors (see below), whose sum is σ = 171156381834240. Its totient is φ = 50219391891456.

The previous prime is 100505534550503. The next prime is 100505534550557. The reversal of 100505534550555 is 555055435505001.

It is a happy number.

It is not a de Polignac number, because 100505534550555 - 2²³ = 100505526161947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100505534550557) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5375119 + ... + 15162551.

It is an arithmetic number, because the mean of its divisors is an integer number (2674318466160).

Almost surely, 2^{100505534550555} is an apocalyptic number.

100505534550555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100505534550555 is a deficient number, since it is larger than the sum of its proper divisors (70650847283685).

100505534550555 is a wasteful number, since it uses less digits than its factorization.

100505534550555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9787860.

The product of its (nonzero) digits is 4687500, while the sum is 48.

The spelling of 100505534550555 in words is "one hundred trillion, five hundred five billion, five hundred thirty-four million, five hundred fifty thousand, five hundred fifty-five".