340427397857 has 2 divisors, whose sum is σ = 340427397858. Its totient is φ = 340427397856.

The previous prime is 340427397839. The next prime is 340427397883. The reversal of 340427397857 is 758793724043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178955226961 + 161472170896 = 423031^2 + 401836^2 .

It is a cyclic number.

It is not a de Polignac number, because 340427397857 - 2¹⁶ = 340427332321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 340427397796 and 340427397805.

It is not a weakly prime, because it can be changed into another prime (340427897857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170213698928 + 170213698929.

It is an arithmetic number, because the mean of its divisors is an integer number (170213698929).

Almost surely, 2^340427397857 is an apocalyptic number.

It is an amenable number.

340427397857 is a deficient number, since it is larger than the sum of its proper divisors (1).

340427397857 is an equidigital number, since it uses as much as digits as its factorization.

340427397857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35562240, while the sum is 59.

The spelling of 340427397857 in words is "three hundred forty billion, four hundred twenty-seven million, three hundred ninety-seven thousand, eight hundred fifty-seven".