20273903239 has 2 divisors, whose sum is σ = 20273903240. Its totient is φ = 20273903238.

The previous prime is 20273903213. The next prime is 20273903267. The reversal of 20273903239 is 93230937202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20273903239 is a prime.

It is a super-2 number, since 2×20273903239² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20273903539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10136951619 + 10136951620.

It is an arithmetic number, because the mean of its divisors is an integer number (10136951620).

Almost surely, 2^20273903239 is an apocalyptic number.

20273903239 is a deficient number, since it is larger than the sum of its proper divisors (1).

20273903239 is an equidigital number, since it uses as much as digits as its factorization.

20273903239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 40.

The spelling of 20273903239 in words is "twenty billion, two hundred seventy-three million, nine hundred three thousand, two hundred thirty-nine".