20627816873 has 2 divisors, whose sum is σ = 20627816874. Its totient is φ = 20627816872.

The previous prime is 20627816861. The next prime is 20627816879. The reversal of 20627816873 is 37861872602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20422410649 + 205406224 = 142907^2 + 14332^2 .

It is a cyclic number.

It is not a de Polignac number, because 20627816873 - 2⁸ = 20627816617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20627816879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10313908436 + 10313908437.

It is an arithmetic number, because the mean of its divisors is an integer number (10313908437).

Almost surely, 2^20627816873 is an apocalyptic number.

It is an amenable number.

20627816873 is a deficient number, since it is larger than the sum of its proper divisors (1).

20627816873 is an equidigital number, since it uses as much as digits as its factorization.

20627816873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 20627816873 in words is "twenty billion, six hundred twenty-seven million, eight hundred sixteen thousand, eight hundred seventy-three".