340214462721 has 24 divisors (see below), whose sum is σ = 561691428480. Its totient is φ = 194384880576.

The previous prime is 340214462717. The next prime is 340214462729. The reversal of 340214462721 is 127264412043.

340214462721 is a `hidden beast` number, since 3 + 4 + 0 + 2 + 1 + 4 + 4 + 627 + 21 = 666.

It is not a de Polignac number, because 340214462721 - 2² = 340214462717 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (340214462729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210085 + ... + 851213.

It is an arithmetic number, because the mean of its divisors is an integer number (23403809520).

Almost surely, 2^340214462721 is an apocalyptic number.

It is an amenable number.

340214462721 is a deficient number, since it is larger than the sum of its proper divisors (221476965759).

340214462721 is a wasteful number, since it uses less digits than its factorization.

340214462721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649565 (or 649562 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

Adding to 340214462721 its reverse (127264412043), we get a palindrome (467478874764).

The spelling of 340214462721 in words is "three hundred forty billion, two hundred fourteen million, four hundred sixty-two thousand, seven hundred twenty-one".