100505105010556 has 24 divisors (see below), whose sum is σ = 183538612847520. Its totient is φ = 48065681138112.

The previous prime is 100505105010551. The next prime is 100505105010581. The reversal of 100505105010556 is 655010501505001.

It is a super-2 number, since 2×100505105010556² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100505105010551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20225451 + ... + 24699778.

It is an arithmetic number, because the mean of its divisors is an integer number (7647442201980).

Almost surely, 2^{100505105010556} is an apocalyptic number.

It is an amenable number.

100505105010556 is a deficient number, since it is larger than the sum of its proper divisors (83033507836964).

100505105010556 is a wasteful number, since it uses less digits than its factorization.

100505105010556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44949573 (or 44949571 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 34.

Adding to 100505105010556 its reverse (655010501505001), we get a palindrome (755515606515557).

The spelling of 100505105010556 in words is "one hundred trillion, five hundred five billion, one hundred five million, ten thousand, five hundred fifty-six".