6133659721 has 48 divisors (see below), whose sum is σ = 7836341760. Its totient is φ = 4765340160.

The previous prime is 6133659709. The next prime is 6133659751. The reversal of 6133659721 is 1279563316.

It is not a de Polignac number, because 6133659721 - 2¹⁷ = 6133528649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6133659751) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6945946 + ... + 6946828.

It is an arithmetic number, because the mean of its divisors is an integer number (163257120).

Almost surely, 2^6133659721 is an apocalyptic number.

It is an amenable number.

6133659721 is a deficient number, since it is larger than the sum of its proper divisors (1702682039).

6133659721 is a wasteful number, since it uses less digits than its factorization.

6133659721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214 (or 1207 counting only the distinct ones).

The product of its digits is 204120, while the sum is 43.

The square root of 6133659721 is about 78317.6845993292. The cubic root of 6133659721 is about 1830.5147228787.

The spelling of 6133659721 in words is "six billion, one hundred thirty-three million, six hundred fifty-nine thousand, seven hundred twenty-one".