100505105010554 has 16 divisors (see below), whose sum is σ = 157336340780520. Its totient is φ = 48090327936000.

The previous prime is 100505105010551. The next prime is 100505105010581. The reversal of 100505105010554 is 455010501505001.

It can be written as a sum of positive squares in 4 ways, for example, as 63394797547225 + 37110307463329 = 7962085^2 + 6091823^2 .

It is a super-2 number, since 2×100505105010554² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 100505105010554.

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, 7667456447 + ... + 7667469554.

Almost surely, 2^{100505105010554} is an apocalyptic number.

100505105010554 is a deficient number, since it is larger than the sum of its proper divisors (56831235769966).

100505105010554 is a wasteful number, since it uses less digits than its factorization.

100505105010554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15334926145.

The product of its (nonzero) digits is 12500, while the sum is 32.

Adding to 100505105010554 its reverse (455010501505001), we get a palindrome (555515606515555).

The spelling of 100505105010554 in words is "one hundred trillion, five hundred five billion, one hundred five million, ten thousand, five hundred fifty-four".