340255277657 has 2 divisors, whose sum is σ = 340255277658. Its totient is φ = 340255277656.

The previous prime is 340255277639. The next prime is 340255277683. The reversal of 340255277657 is 756772552043.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 339295765081 + 959512576 = 582491^2 + 30976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340255277657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 340255277599 and 340255277608.

It is not a weakly prime, because it can be changed into another prime (340255177657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170127638828 + 170127638829.

It is an arithmetic number, because the mean of its divisors is an integer number (170127638829).

Almost surely, 2^340255277657 is an apocalyptic number.

It is an amenable number.

340255277657 is a deficient number, since it is larger than the sum of its proper divisors (1).

340255277657 is an equidigital number, since it uses as much as digits as its factorization.

340255277657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12348000, while the sum is 53.

The spelling of 340255277657 in words is "three hundred forty billion, two hundred fifty-five million, two hundred seventy-seven thousand, six hundred fifty-seven".