6321357138 has 32 divisors (see below), whose sum is σ = 12854350080. Its totient is φ = 2071959120.

The previous prime is 6321357137. The next prime is 6321357151. The reversal of 6321357138 is 8317531236.

It is a super-2 number, since 2×6321357138² = 79919112132287102088, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6321357096 and 6321357105.

It is not an unprimeable number, because it can be changed into a prime (6321357131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215773 + ... + 243311.

It is an arithmetic number, because the mean of its divisors is an integer number (401698440).

Almost surely, 2^6321357138 is an apocalyptic number.

6321357138 is an abundant number, since it is smaller than the sum of its proper divisors (6532992942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6321357138 is a wasteful number, since it uses less digits than its factorization.

6321357138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28182.

The product of its digits is 90720, while the sum is 39.

The square root of 6321357138 is about 79506.9628271638. The cubic root of 6321357138 is about 1848.9994236769. Note that the first 3 decimals are identical.

The spelling of 6321357138 in words is "six billion, three hundred twenty-one million, three hundred fifty-seven thousand, one hundred thirty-eight".