340662387641 has 4 divisors (see below), whose sum is σ = 341076316032. Its totient is φ = 340248459252.

The previous prime is 340662387623. The next prime is 340662387671. The reversal of 340662387641 is 146783266043.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340662387641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340662387641.

It is not an unprimeable number, because it can be changed into a prime (340662387671) 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, 206962961 + ... + 206964606.

It is an arithmetic number, because the mean of its divisors is an integer number (85269079008).

Almost surely, 2^340662387641 is an apocalyptic number.

It is an amenable number.

340662387641 is a deficient number, since it is larger than the sum of its proper divisors (413928391).

340662387641 is an equidigital number, since it uses as much as digits as its factorization.

340662387641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413928390.

The product of its (nonzero) digits is 3483648, while the sum is 50.

The spelling of 340662387641 in words is "three hundred forty billion, six hundred sixty-two million, three hundred eighty-seven thousand, six hundred forty-one".