100666664999 has 4 divisors (see below), whose sum is σ = 102372879720. Its totient is φ = 98960450280.

The previous prime is 100666664941. The next prime is 100666665031. The reversal of 100666664999 is 999466666001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100666664999 - 2³⁶ = 31947188263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100666064999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 853107272 + ... + 853107389.

It is an arithmetic number, because the mean of its divisors is an integer number (25593219930).

Almost surely, 2^100666664999 is an apocalyptic number.

100666664999 is a deficient number, since it is larger than the sum of its proper divisors (1706214721).

100666664999 is an equidigital number, since it uses as much as digits as its factorization.

100666664999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706214720.

The product of its (nonzero) digits is 22674816, while the sum is 62.

The spelling of 100666664999 in words is "one hundred billion, six hundred sixty-six million, six hundred sixty-four thousand, nine hundred ninety-nine".