6340721573201 has 4 divisors (see below), whose sum is σ = 6713705195172. Its totient is φ = 5967737951232.

The previous prime is 6340721573119. The next prime is 6340721573227. The reversal of 6340721573201 is 1023751270436.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4867314027601 + 1473407545600 = 2206199^2 + 1213840^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6340721573201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6340721573231) 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, 186491810960 + ... + 186491810993.

It is an arithmetic number, because the mean of its divisors is an integer number (1678426298793).

Almost surely, 2^{6340721573201} is an apocalyptic number.

It is an amenable number.

6340721573201 is a deficient number, since it is larger than the sum of its proper divisors (372983621971).

6340721573201 is a wasteful number, since it uses less digits than its factorization.

6340721573201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372983621970.

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 6340721573201 in words is "six trillion, three hundred forty billion, seven hundred twenty-one million, five hundred seventy-three thousand, two hundred one".