100566665066550 has 48 divisors (see below), whose sum is σ = 253493941344912. Its totient is φ = 26378141654400.

The previous prime is 100566665066467. The next prime is 100566665066597. The reversal of 100566665066550 is 55660566665001.

It is a super-2 number, since 2×100566665066550² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5495437029 + ... + 5495455328.

It is an arithmetic number, because the mean of its divisors is an integer number (5281123778019).

Almost surely, 2^{100566665066550} is an apocalyptic number.

100566665066550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100566665066550 is an abundant number, since it is smaller than the sum of its proper divisors (152927276278362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100566665066550 is a wasteful number, since it uses less digits than its factorization.

100566665066550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10990892433 (or 10990892428 counting only the distinct ones).

The product of its (nonzero) digits is 29160000, while the sum is 57.

The spelling of 100566665066550 in words is "one hundred trillion, five hundred sixty-six billion, six hundred sixty-five million, sixty-six thousand, five hundred fifty".