210642243241019 has 2 divisors, whose sum is σ = 210642243241020. Its totient is φ = 210642243241018.

The previous prime is 210642243241007. The next prime is 210642243241049. The reversal of 210642243241019 is 910142342246012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210642243241019 - 2²⁴ = 210642226463803 is a prime.

It is a super-2 number, since 2×210642243241019² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210642243241049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105321121620509 + 105321121620510.

It is an arithmetic number, because the mean of its divisors is an integer number (105321121620510).

Almost surely, 2^{210642243241019} is an apocalyptic number.

210642243241019 is a deficient number, since it is larger than the sum of its proper divisors (1).

210642243241019 is an equidigital number, since it uses as much as digits as its factorization.

210642243241019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 210642243241019 in words is "two hundred ten trillion, six hundred forty-two billion, two hundred forty-three million, two hundred forty-one thousand, nineteen".