100566660055551 has 8 divisors (see below), whose sum is σ = 134090776490544. Its totient is φ = 67043491828800.

The previous prime is 100566660055529. The next prime is 100566660055567. The reversal of 100566660055551 is 155550066665001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100566660055551 - 2²⁵ = 100566626501119 is a prime.

It is a super-2 number, since 2×100566660055551² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 100566660055494 and 100566660055503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100566660055151) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 236804550 + ... + 237228851.

It is an arithmetic number, because the mean of its divisors is an integer number (16761347061318).

Almost surely, 2^{100566660055551} is an apocalyptic number.

100566660055551 is a deficient number, since it is larger than the sum of its proper divisors (33524116434993).

100566660055551 is an equidigital number, since it uses as much as digits as its factorization.

100566660055551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474104121.

The product of its (nonzero) digits is 4050000, while the sum is 51.

The spelling of 100566660055551 in words is "one hundred trillion, five hundred sixty-six billion, six hundred sixty million, fifty-five thousand, five hundred fifty-one".