200166686837 has 8 divisors (see below), whose sum is σ = 215569889304. Its totient is φ = 184764307968.

The previous prime is 200166686809. The next prime is 200166686843. The reversal of 200166686837 is 738686661002.

It can be written as a sum of positive squares in 4 ways, for example, as 28498166596 + 171668520241 = 168814^2 + 414329^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 200166686837 - 2⁸ = 200166686581 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 (200166686437) 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, 355613 + ... + 725805.

It is an arithmetic number, because the mean of its divisors is an integer number (26946236163).

Almost surely, 2^200166686837 is an apocalyptic number.

It is an amenable number.

200166686837 is a deficient number, since it is larger than the sum of its proper divisors (15403202467).

200166686837 is a wasteful number, since it uses less digits than its factorization.

200166686837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411799.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 200166686837 in words is "two hundred billion, one hundred sixty-six million, six hundred eighty-six thousand, eight hundred thirty-seven".