6538794523784 has 8 divisors (see below), whose sum is σ = 12260239732110. Its totient is φ = 3269397261888.

The previous prime is 6538794523777. The next prime is 6538794523823. The reversal of 6538794523784 is 4873254978356.

It can be written as a sum of positive squares in only one way, i.e., 6227071068100 + 311723455684 = 2495410^2 + 558322^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408674657729 + ... + 408674657744.

Almost surely, 2^{6538794523784} is an apocalyptic number.

It is an amenable number.

6538794523784 is a deficient number, since it is larger than the sum of its proper divisors (5721445208326).

6538794523784 is a wasteful number, since it uses less digits than its factorization.

6538794523784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817349315479 (or 817349315475 counting only the distinct ones).

The product of its digits is 1219276800, while the sum is 71.

The spelling of 6538794523784 in words is "six trillion, five hundred thirty-eight billion, seven hundred ninety-four million, five hundred twenty-three thousand, seven hundred eighty-four".