6347136321 has 16 divisors (see below), whose sum is σ = 9414222720. Its totient is φ = 4226448240.

The previous prime is 6347136319. The next prime is 6347136343. The reversal of 6347136321 is 1236317436.

6347136321 is a `hidden beast` number, since 6 + 3 + 4 + 7 + 13 + 632 + 1 = 666.

It is not a de Polignac number, because 6347136321 - 2¹ = 6347136319 is a prime.

It is a super-2 number, since 2×6347136321² = 80572278954714830082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6347136311) 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, 114765 + ... + 160826.

It is an arithmetic number, because the mean of its divisors is an integer number (588388920).

Almost surely, 2^6347136321 is an apocalyptic number.

It is an amenable number.

6347136321 is a deficient number, since it is larger than the sum of its proper divisors (3067086399).

6347136321 is a wasteful number, since it uses less digits than its factorization.

6347136321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276453 (or 276447 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 6347136321 is about 79668.9169061561. The cubic root of 6347136321 is about 1851.5094883448.

The spelling of 6347136321 in words is "six billion, three hundred forty-seven million, one hundred thirty-six thousand, three hundred twenty-one".