212659641739 has 2 divisors, whose sum is σ = 212659641740. Its totient is φ = 212659641738.

The previous prime is 212659641731. The next prime is 212659641751. The reversal of 212659641739 is 937146956212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212659641739 - 2³ = 212659641731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212659641739.

It is not a weakly prime, because it can be changed into another prime (212659641731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106329820869 + 106329820870.

It is an arithmetic number, because the mean of its divisors is an integer number (106329820870).

Almost surely, 2^212659641739 is an apocalyptic number.

212659641739 is a deficient number, since it is larger than the sum of its proper divisors (1).

212659641739 is an equidigital number, since it uses as much as digits as its factorization.

212659641739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 55.

The spelling of 212659641739 in words is "two hundred twelve billion, six hundred fifty-nine million, six hundred forty-one thousand, seven hundred thirty-nine".