340520650289 has 4 divisors (see below), whose sum is σ = 342970439280. Its totient is φ = 338070861300.

The previous prime is 340520650247. The next prime is 340520650319. The reversal of 340520650289 is 982056025043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 982056025043 = 2719 ⋅361182797.

It is a cyclic number.

It is not a de Polignac number, because 340520650289 - 2⁸ = 340520650033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340520653289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1224894287 + ... + 1224894564.

It is an arithmetic number, because the mean of its divisors is an integer number (85742609820).

Almost surely, 2^340520650289 is an apocalyptic number.

It is an amenable number.

340520650289 is a deficient number, since it is larger than the sum of its proper divisors (2449788991).

340520650289 is a wasteful number, since it uses less digits than its factorization.

340520650289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449788990.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 340520650289 in words is "three hundred forty billion, five hundred twenty million, six hundred fifty thousand, two hundred eighty-nine".