340129278721 has 32 divisors (see below), whose sum is σ = 353941436160. Its totient is φ = 326726400000.

The previous prime is 340129278703. The next prime is 340129278737. The reversal of 340129278721 is 127872921043.

It is a cyclic number.

It is not a de Polignac number, because 340129278721 - 2¹³ = 340129270529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340129278701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104621346 + ... + 104624596.

It is an arithmetic number, because the mean of its divisors is an integer number (11060669880).

Almost surely, 2^340129278721 is an apocalyptic number.

It is an amenable number.

340129278721 is a deficient number, since it is larger than the sum of its proper divisors (13812157439).

340129278721 is a wasteful number, since it uses less digits than its factorization.

340129278721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3657.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 340129278721 in words is "three hundred forty billion, one hundred twenty-nine million, two hundred seventy-eight thousand, seven hundred twenty-one".