20263507073 has 2 divisors, whose sum is σ = 20263507074. Its totient is φ = 20263507072.

The previous prime is 20263507057. The next prime is 20263507091. The reversal of 20263507073 is 37070536202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11608554049 + 8654953024 = 107743^2 + 93032^2 .

It is a cyclic number.

It is not a de Polignac number, because 20263507073 - 2⁴ = 20263507057 is a prime.

It is not a weakly prime, because it can be changed into another prime (20263504073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10131753536 + 10131753537.

It is an arithmetic number, because the mean of its divisors is an integer number (10131753537).

Almost surely, 2^20263507073 is an apocalyptic number.

It is an amenable number.

20263507073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20263507073 is an equidigital number, since it uses as much as digits as its factorization.

20263507073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 35.

The spelling of 20263507073 in words is "twenty billion, two hundred sixty-three million, five hundred seven thousand, seventy-three".