20540730319 has 2 divisors, whose sum is σ = 20540730320. Its totient is φ = 20540730318.

The previous prime is 20540730307. The next prime is 20540730341. The reversal of 20540730319 is 91303704502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20540730319 - 2¹⁹ = 20540206031 is a prime.

It is a super-2 number, since 2×20540730319² (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 (20540730619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270365159 + 10270365160.

It is an arithmetic number, because the mean of its divisors is an integer number (10270365160).

Almost surely, 2^20540730319 is an apocalyptic number.

20540730319 is a deficient number, since it is larger than the sum of its proper divisors (1).

20540730319 is an equidigital number, since it uses as much as digits as its factorization.

20540730319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 34.

The spelling of 20540730319 in words is "twenty billion, five hundred forty million, seven hundred thirty thousand, three hundred nineteen".