20000166793 has 2 divisors, whose sum is σ = 20000166794. Its totient is φ = 20000166792.

The previous prime is 20000166763. The next prime is 20000166847. The reversal of 20000166793 is 39766100002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11630112649 + 8370054144 = 107843^2 + 91488^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000166793 - 2²⁹ = 19463295881 is a prime.

It is not a weakly prime, because it can be changed into another prime (20000166763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000083396 + 10000083397.

It is an arithmetic number, because the mean of its divisors is an integer number (10000083397).

Almost surely, 2^20000166793 is an apocalyptic number.

It is an amenable number.

20000166793 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000166793 is an equidigital number, since it uses as much as digits as its factorization.

20000166793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

Adding to 20000166793 its reverse (39766100002), we get a palindrome (59766266795).

The spelling of 20000166793 in words is "twenty billion, one hundred sixty-six thousand, seven hundred ninety-three".