340679665811 has 2 divisors, whose sum is σ = 340679665812. Its totient is φ = 340679665810.

The previous prime is 340679665741. The next prime is 340679665841. The reversal of 340679665811 is 118566976043.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340679665811 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (340679665841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170339832905 + 170339832906.

It is an arithmetic number, because the mean of its divisors is an integer number (170339832906).

Almost surely, 2^340679665811 is an apocalyptic number.

340679665811 is a deficient number, since it is larger than the sum of its proper divisors (1).

340679665811 is an equidigital number, since it uses as much as digits as its factorization.

340679665811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 340679665811 in words is "three hundred forty billion, six hundred seventy-nine million, six hundred sixty-five thousand, eight hundred eleven".