20046166809793 has 12 divisors (see below), whose sum is σ = 22188318082308. Its totient is φ = 18046677017600.

The previous prime is 20046166809737. The next prime is 20046166809881. The reversal of 20046166809793 is 39790866164002.

It can be written as a sum of positive squares in 2 ways, for example, as 8451276923664 + 11594889886129 = 2907108^2 + 3405127^2 .

It is not a de Polignac number, because 20046166809793 - 2⁹ = 20046166809281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20046166809733) 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 11 ways as a sum of consecutive naturals, for example, 1114533808 + ... + 1114551793.

It is an arithmetic number, because the mean of its divisors is an integer number (1849026506859).

Almost surely, 2^{20046166809793} is an apocalyptic number.

20046166809793 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20046166809793 is a deficient number, since it is larger than the sum of its proper divisors (2142151272515).

20046166809793 is a wasteful number, since it uses less digits than its factorization.

20046166809793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229085664 (or 2229085641 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 61.

The spelling of 20046166809793 in words is "twenty trillion, forty-six billion, one hundred sixty-six million, eight hundred nine thousand, seven hundred ninety-three".