6356438068 has 24 divisors (see below), whose sum is σ = 11798629920. Its totient is φ = 2987955360.

The previous prime is 6356438017. The next prime is 6356438069. The reversal of 6356438068 is 8608346536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6356438069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309271 + ... + 329182.

It is an arithmetic number, because the mean of its divisors is an integer number (491609580).

Almost surely, 2^6356438068 is an apocalyptic number.

It is an amenable number.

6356438068 is a deficient number, since it is larger than the sum of its proper divisors (5442191852).

6356438068 is a wasteful number, since it uses less digits than its factorization.

6356438068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638607 (or 638605 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 49.

The square root of 6356438068 is about 79727.2730500674. The cubic root of 6356438068 is about 1852.4135110780.

The spelling of 6356438068 in words is "six billion, three hundred fifty-six million, four hundred thirty-eight thousand, sixty-eight".