20262056173 has 2 divisors, whose sum is σ = 20262056174. Its totient is φ = 20262056172.

The previous prime is 20262056147. The next prime is 20262056219. The reversal of 20262056173 is 37165026202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19723955364 + 538100809 = 140442^2 + 23197^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20262056173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20262056473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10131028086 + 10131028087.

It is an arithmetic number, because the mean of its divisors is an integer number (10131028087).

Almost surely, 2^20262056173 is an apocalyptic number.

It is an amenable number.

20262056173 is a deficient number, since it is larger than the sum of its proper divisors (1).

20262056173 is an equidigital number, since it uses as much as digits as its factorization.

20262056173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 20262056173 in words is "twenty billion, two hundred sixty-two million, fifty-six thousand, one hundred seventy-three".