20354334061673 has 2 divisors, whose sum is σ = 20354334061674. Its totient is φ = 20354334061672.

The previous prime is 20354334061619. The next prime is 20354334061679. The reversal of 20354334061673 is 37616043345302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19613489978944 + 740844082729 = 4428712^2 + 860723^2 .

It is a cyclic number.

It is not a de Polignac number, because 20354334061673 - 2⁶ = 20354334061609 is a prime.

It is not a weakly prime, because it can be changed into another prime (20354334061679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10177167030836 + 10177167030837.

It is an arithmetic number, because the mean of its divisors is an integer number (10177167030837).

Almost surely, 2^{20354334061673} is an apocalyptic number.

It is an amenable number.

20354334061673 is a deficient number, since it is larger than the sum of its proper divisors (1).

20354334061673 is an equidigital number, since it uses as much as digits as its factorization.

20354334061673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 47.

The spelling of 20354334061673 in words is "twenty trillion, three hundred fifty-four billion, three hundred thirty-four million, sixty-one thousand, six hundred seventy-three".