213021763519 has 2 divisors, whose sum is σ = 213021763520. Its totient is φ = 213021763518.

The previous prime is 213021763517. The next prime is 213021763579. The reversal of 213021763519 is 915367120312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213021763519 - 2¹ = 213021763517 is a prime.

It is a super-2 number, since 2×213021763519² (a number of 23 digits) contains 22 as substring.

Together with 213021763517, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213021763517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106510881759 + 106510881760.

It is an arithmetic number, because the mean of its divisors is an integer number (106510881760).

Almost surely, 2^213021763519 is an apocalyptic number.

213021763519 is a deficient number, since it is larger than the sum of its proper divisors (1).

213021763519 is an equidigital number, since it uses as much as digits as its factorization.

213021763519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 40.

The spelling of 213021763519 in words is "two hundred thirteen billion, twenty-one million, seven hundred sixty-three thousand, five hundred nineteen".