6538668356 has 24 divisors (see below), whose sum is σ = 12787377120. Its totient is φ = 2899630400.

The previous prime is 6538668349. The next prime is 6538668403.

6538668356 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1810466 + ... + 1814073.

It is an arithmetic number, because the mean of its divisors is an integer number (532807380).

Almost surely, 2^6538668356 is an apocalyptic number.

It is an amenable number.

6538668356 is a deficient number, since it is larger than the sum of its proper divisors (6248708764).

6538668356 is a wasteful number, since it uses less digits than its factorization.

6538668356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624595 (or 3624593 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 56.

The square root of 6538668356 is about 80862.0328460768. The cubic root of 6538668356 is about 1869.9490349956.

The spelling of 6538668356 in words is "six billion, five hundred thirty-eight million, six hundred sixty-eight thousand, three hundred fifty-six".