340638726650618 has 8 divisors (see below), whose sum is σ = 557408825428320. Its totient is φ = 154835784841180.

The previous prime is 340638726650611. The next prime is 340638726650669. The reversal of 340638726650618 is 816056627836043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (340638726650611) 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, 7741789242038 + ... + 7741789242081.

It is an arithmetic number, because the mean of its divisors is an integer number (69676103178540).

Almost surely, 2^{340638726650618} is an apocalyptic number.

340638726650618 is a deficient number, since it is larger than the sum of its proper divisors (216770098777702).

340638726650618 is a wasteful number, since it uses less digits than its factorization.

340638726650618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15483578484132.

The product of its (nonzero) digits is 209018880, while the sum is 65.

The spelling of 340638726650618 in words is "three hundred forty trillion, six hundred thirty-eight billion, seven hundred twenty-six million, six hundred fifty thousand, six hundred eighteen".