213342863779 has 2 divisors, whose sum is σ = 213342863780. Its totient is φ = 213342863778.

The previous prime is 213342863777. The next prime is 213342863827. The reversal of 213342863779 is 977368243312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213342863779 - 2¹ = 213342863777 is a prime.

Together with 213342863777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (213342863777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106671431889 + 106671431890.

It is an arithmetic number, because the mean of its divisors is an integer number (106671431890).

Almost surely, 2^213342863779 is an apocalyptic number.

213342863779 is a deficient number, since it is larger than the sum of its proper divisors (1).

213342863779 is an equidigital number, since it uses as much as digits as its factorization.

213342863779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9144576, while the sum is 55.

The spelling of 213342863779 in words is "two hundred thirteen billion, three hundred forty-two million, eight hundred sixty-three thousand, seven hundred seventy-nine".