20235730673 has 2 divisors, whose sum is σ = 20235730674. Its totient is φ = 20235730672.

The previous prime is 20235730663. The next prime is 20235730741. The reversal of 20235730673 is 37603753202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19955235169 + 280495504 = 141263^2 + 16748^2 .

It is a cyclic number.

It is not a de Polignac number, because 20235730673 - 2⁴ = 20235730657 is a prime.

It is not a weakly prime, because it can be changed into another prime (20235730633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10117865336 + 10117865337.

It is an arithmetic number, because the mean of its divisors is an integer number (10117865337).

Almost surely, 2^20235730673 is an apocalyptic number.

It is an amenable number.

20235730673 is a deficient number, since it is larger than the sum of its proper divisors (1).

20235730673 is an equidigital number, since it uses as much as digits as its factorization.

20235730673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 38.

The spelling of 20235730673 in words is "twenty billion, two hundred thirty-five million, seven hundred thirty thousand, six hundred seventy-three".