100556005556 has 6 divisors (see below), whose sum is σ = 175973009730. Its totient is φ = 50278002776.

The previous prime is 100556005507. The next prime is 100556005559. The reversal of 100556005556 is 655500655001.

It can be written as a sum of positive squares in only one way, i.e., 68364469156 + 32191536400 = 261466^2 + 179420^2 .

It is a super-2 number, since 2×100556005556² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100556005559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12569500691 + ... + 12569500698.

It is an arithmetic number, because the mean of its divisors is an integer number (29328834955).

Almost surely, 2^100556005556 is an apocalyptic number.

It is an amenable number.

100556005556 is a deficient number, since it is larger than the sum of its proper divisors (75417004174).

100556005556 is a wasteful number, since it uses less digits than its factorization.

100556005556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25139001393 (or 25139001391 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 38.

The spelling of 100556005556 in words is "one hundred billion, five hundred fifty-six million, five thousand, five hundred fifty-six".