340255243561 has 2 divisors, whose sum is σ = 340255243562. Its totient is φ = 340255243560.

The previous prime is 340255243553. The next prime is 340255243567. The reversal of 340255243561 is 165342552043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339988117225 + 267126336 = 583085^2 + 16344^2 .

It is a cyclic number.

It is not a de Polignac number, because 340255243561 - 2³ = 340255243553 is a prime.

It is not a weakly prime, because it can be changed into another prime (340255243567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170127621780 + 170127621781.

It is an arithmetic number, because the mean of its divisors is an integer number (170127621781).

Almost surely, 2^340255243561 is an apocalyptic number.

It is an amenable number.

340255243561 is a deficient number, since it is larger than the sum of its proper divisors (1).

340255243561 is an equidigital number, since it uses as much as digits as its factorization.

340255243561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432000, while the sum is 40.

The spelling of 340255243561 in words is "three hundred forty billion, two hundred fifty-five million, two hundred forty-three thousand, five hundred sixty-one".