6336461721 has 16 divisors (see below), whose sum is σ = 8724672000. Its totient is φ = 4086389760.

The previous prime is 6336461717. The next prime is 6336461737. The reversal of 6336461721 is 1271646336.

It is not a de Polignac number, because 6336461721 - 2² = 6336461717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6336461721.

It is not an unprimeable number, because it can be changed into a prime (6336411721) 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, 243655 + ... + 268403.

It is an arithmetic number, because the mean of its divisors is an integer number (545292000).

Almost surely, 2^6336461721 is an apocalyptic number.

It is an amenable number.

6336461721 is a deficient number, since it is larger than the sum of its proper divisors (2388210279).

6336461721 is a wasteful number, since it uses less digits than its factorization.

6336461721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27536.

The product of its digits is 108864, while the sum is 39.

The square root of 6336461721 is about 79601.8952098504. The cubic root of 6336461721 is about 1850.4709510527.

The spelling of 6336461721 in words is "six billion, three hundred thirty-six million, four hundred sixty-one thousand, seven hundred twenty-one".