100505105050556 has 24 divisors (see below), whose sum is σ = 177495829583184. Its totient is φ = 49792288582400.

The previous prime is 100505105050523. The next prime is 100505105050561. The reversal of 100505105050556 is 655050501505001.

It is a happy number.

It is a super-2 number, since 2×100505105050556² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33262895 + ... + 36158406.

It is an arithmetic number, because the mean of its divisors is an integer number (7395659565966).

Almost surely, 2^{100505105050556} is an apocalyptic number.

It is an amenable number.

100505105050556 is a deficient number, since it is larger than the sum of its proper divisors (76990724532628).

100505105050556 is a wasteful number, since it uses less digits than its factorization.

100505105050556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69424621 (or 69424619 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 38.

Adding to 100505105050556 its reverse (655050501505001), we get a palindrome (755555606555557).

The spelling of 100505105050556 in words is "one hundred trillion, five hundred five billion, one hundred five million, fifty thousand, five hundred fifty-six".