100606660000666 has 16 divisors (see below), whose sum is σ = 154596350294568. Its totient is φ = 49074632582400.

The previous prime is 100606660000663. The next prime is 100606660000687. The reversal of 100606660000666 is 666000066606001.

It can be written as a sum of positive squares in 4 ways, for example, as 54782276265025 + 45824383735641 = 7401505^2 + 6769371^2 .

It is a super-2 number, since 2×100606660000666² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100606660000663) 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, 20069445 + ... + 24576328.

Almost surely, 2^{100606660000666} is an apocalyptic number.

100606660000666 is a deficient number, since it is larger than the sum of its proper divisors (53989690293902).

100606660000666 is a wasteful number, since it uses less digits than its factorization.

100606660000666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44673297.

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 100606660000666 in words is "one hundred trillion, six hundred six billion, six hundred sixty million, six hundred sixty-six", and thus it is an aban number.