638823846476 has 12 divisors (see below), whose sum is σ = 1118004342840. Its totient is φ = 319394034240.

The previous prime is 638823846407. The next prime is 638823846571. The reversal of 638823846476 is 674648328836.

638823846476 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4391741 + ... + 4534868.

It is an arithmetic number, because the mean of its divisors is an integer number (93167028570).

Almost surely, 2^638823846476 is an apocalyptic number.

It is an amenable number.

638823846476 is a deficient number, since it is larger than the sum of its proper divisors (479180496364).

638823846476 is a wasteful number, since it uses less digits than its factorization.

638823846476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8944504 (or 8944502 counting only the distinct ones).

The product of its digits is 222953472, while the sum is 65.

The spelling of 638823846476 in words is "six hundred thirty-eight billion, eight hundred twenty-three million, eight hundred forty-six thousand, four hundred seventy-six".