340040333657 has 2 divisors, whose sum is σ = 340040333658. Its totient is φ = 340040333656.

The previous prime is 340040333609. The next prime is 340040333783. The reversal of 340040333657 is 756333040043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234477724441 + 105562609216 = 484229^2 + 324904^2 .

It is a cyclic number.

It is not a de Polignac number, because 340040333657 - 2¹⁴ = 340040317273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340040333657.

It is not a weakly prime, because it can be changed into another prime (340040363657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170020166828 + 170020166829.

It is an arithmetic number, because the mean of its divisors is an integer number (170020166829).

Almost surely, 2^340040333657 is an apocalyptic number.

It is an amenable number.

340040333657 is a deficient number, since it is larger than the sum of its proper divisors (1).

340040333657 is an equidigital number, since it uses as much as digits as its factorization.

340040333657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 38.

The spelling of 340040333657 in words is "three hundred forty billion, forty million, three hundred thirty-three thousand, six hundred fifty-seven".