21862380313 has 2 divisors, whose sum is σ = 21862380314. Its totient is φ = 21862380312.

The previous prime is 21862380299. The next prime is 21862380361. The reversal of 21862380313 is 31308326812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11768561289 + 10093819024 = 108483^2 + 100468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21862380313 is a prime.

It is not a weakly prime, because it can be changed into another prime (21862380383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10931190156 + 10931190157.

It is an arithmetic number, because the mean of its divisors is an integer number (10931190157).

Almost surely, 2^21862380313 is an apocalyptic number.

It is an amenable number.

21862380313 is a deficient number, since it is larger than the sum of its proper divisors (1).

21862380313 is an equidigital number, since it uses as much as digits as its factorization.

21862380313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 21862380313 in words is "twenty-one billion, eight hundred sixty-two million, three hundred eighty thousand, three hundred thirteen".