340040666686 has 32 divisors (see below), whose sum is σ = 649701768960. Its totient is φ = 129940350336.

The previous prime is 340040666681. The next prime is 340040666701. The reversal of 340040666686 is 686666040043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340040666681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37593960 + ... + 37603003.

It is an arithmetic number, because the mean of its divisors is an integer number (20303180280).

Almost surely, 2^340040666686 is an apocalyptic number.

340040666686 is a deficient number, since it is larger than the sum of its proper divisors (309661102274).

340040666686 is a wasteful number, since it uses less digits than its factorization.

340040666686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75197008.

The product of its (nonzero) digits is 2985984, while the sum is 49.

The spelling of 340040666686 in words is "three hundred forty billion, forty million, six hundred sixty-six thousand, six hundred eighty-six".