340221512665 has 8 divisors (see below), whose sum is σ = 408784582080. Its totient is φ = 271831365552.

The previous prime is 340221512599. The next prime is 340221512753. The reversal of 340221512665 is 566215122043.

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

It is a cyclic number.

It is not a de Polignac number, because 340221512665 - 2⁹ = 340221512153 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43226245 + ... + 43234114.

It is an arithmetic number, because the mean of its divisors is an integer number (51098072760).

Almost surely, 2^340221512665 is an apocalyptic number.

It is an amenable number.

340221512665 is a deficient number, since it is larger than the sum of its proper divisors (68563069415).

340221512665 is an equidigital number, since it uses as much as digits as its factorization.

340221512665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86461151.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 340221512665 in words is "three hundred forty billion, two hundred twenty-one million, five hundred twelve thousand, six hundred sixty-five".