20493059519 has 2 divisors, whose sum is σ = 20493059520. Its totient is φ = 20493059518.

The previous prime is 20493059491. The next prime is 20493059527. The reversal of 20493059519 is 91595039402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20493059519 - 2⁸ = 20493059263 is a prime.

It is a super-2 number, since 2×20493059519² (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 (20493059569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10246529759 + 10246529760.

It is an arithmetic number, because the mean of its divisors is an integer number (10246529760).

Almost surely, 2^20493059519 is an apocalyptic number.

20493059519 is a deficient number, since it is larger than the sum of its proper divisors (1).

20493059519 is an equidigital number, since it uses as much as digits as its factorization.

20493059519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 437400, while the sum is 47.

The spelling of 20493059519 in words is "twenty billion, four hundred ninety-three million, fifty-nine thousand, five hundred nineteen".