20869231519 has 2 divisors, whose sum is σ = 20869231520. Its totient is φ = 20869231518.

The previous prime is 20869231499. The next prime is 20869231543. The reversal of 20869231519 is 91513296802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20869231519 - 2⁹ = 20869231007 is a prime.

It is a super-2 number, since 2×20869231519² (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 (20869231819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10434615759 + 10434615760.

It is an arithmetic number, because the mean of its divisors is an integer number (10434615760).

Almost surely, 2^20869231519 is an apocalyptic number.

20869231519 is a deficient number, since it is larger than the sum of its proper divisors (1).

20869231519 is an equidigital number, since it uses as much as digits as its factorization.

20869231519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 20869231519 in words is "twenty billion, eight hundred sixty-nine million, two hundred thirty-one thousand, five hundred nineteen".