100505142015255 has 24 divisors (see below), whose sum is σ = 176307815397168. Its totient is φ = 52956926232576.

The previous prime is 100505142015227. The next prime is 100505142015259. The reversal of 100505142015255 is 552510241505001.

100505142015255 is a `hidden beast` number, since 1 + 0 + 0 + 505 + 142 + 0 + 1 + 5 + 2 + 5 + 5 = 666.

It is not a de Polignac number, because 100505142015255 - 2²³ = 100505133626647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100505142015259) 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, 13454499882 + ... + 13454507351.

It is an arithmetic number, because the mean of its divisors is an integer number (7346158974882).

Almost surely, 2^{100505142015255} is an apocalyptic number.

100505142015255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100505142015255 is a deficient number, since it is larger than the sum of its proper divisors (75802673381913).

100505142015255 is a wasteful number, since it uses less digits than its factorization.

100505142015255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26909007327 (or 26909007324 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 36.

The spelling of 100505142015255 in words is "one hundred trillion, five hundred five billion, one hundred forty-two million, fifteen thousand, two hundred fifty-five".