340207720757 has 2 divisors, whose sum is σ = 340207720758. Its totient is φ = 340207720756.

The previous prime is 340207720751. The next prime is 340207720771. The reversal of 340207720757 is 757027702043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334186891921 + 6020828836 = 578089^2 + 77594^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340207720757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340207720751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170103860378 + 170103860379.

It is an arithmetic number, because the mean of its divisors is an integer number (170103860379).

Almost surely, 2^340207720757 is an apocalyptic number.

It is an amenable number.

340207720757 is a deficient number, since it is larger than the sum of its proper divisors (1).

340207720757 is an equidigital number, since it uses as much as digits as its factorization.

340207720757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576240, while the sum is 44.

The spelling of 340207720757 in words is "three hundred forty billion, two hundred seven million, seven hundred twenty thousand, seven hundred fifty-seven".