212456683639 has 2 divisors, whose sum is σ = 212456683640. Its totient is φ = 212456683638.

The previous prime is 212456683619. The next prime is 212456683651. The reversal of 212456683639 is 936386654212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212456683639 - 2¹⁵ = 212456650871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212456683639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212456683619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106228341819 + 106228341820.

It is an arithmetic number, because the mean of its divisors is an integer number (106228341820).

Almost surely, 2^212456683639 is an apocalyptic number.

212456683639 is a deficient number, since it is larger than the sum of its proper divisors (1).

212456683639 is an equidigital number, since it uses as much as digits as its factorization.

212456683639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 55.

The spelling of 212456683639 in words is "two hundred twelve billion, four hundred fifty-six million, six hundred eighty-three thousand, six hundred thirty-nine".