20237735873 has 2 divisors, whose sum is σ = 20237735874. Its totient is φ = 20237735872.

The previous prime is 20237735831. The next prime is 20237735879. The reversal of 20237735873 is 37853773202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18689077264 + 1548658609 = 136708^2 + 39353^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20237735873 is a prime.

It is a super-2 number, since 2×20237735873² (a number of 21 digits) contains 22 as substring.

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 (20237735879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10118867936 + 10118867937.

It is an arithmetic number, because the mean of its divisors is an integer number (10118867937).

Almost surely, 2^20237735873 is an apocalyptic number.

It is an amenable number.

20237735873 is a deficient number, since it is larger than the sum of its proper divisors (1).

20237735873 is an equidigital number, since it uses as much as digits as its factorization.

20237735873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1481760, while the sum is 47.

The spelling of 20237735873 in words is "twenty billion, two hundred thirty-seven million, seven hundred thirty-five thousand, eight hundred seventy-three".