3638578325668 has 48 divisors (see below), whose sum is σ = 7492838540544. Its totient is φ = 1524201719040.

The previous prime is 3638578325647. The next prime is 3638578325689. The reversal of 3638578325668 is 8665238758363.

It is an interprime number because it is at equal distance from previous prime (3638578325647) and next prime (3638578325689).

It is a junction number, because it is equal to n+sod(n) for n = 3638578325597 and 3638578325606.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4801980 + ... + 5507827.

It is an arithmetic number, because the mean of its divisors is an integer number (156100802928).

Almost surely, 2^{3638578325668} is an apocalyptic number.

It is an amenable number.

3638578325668 is an abundant number, since it is smaller than the sum of its proper divisors (3854260214876).

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

3638578325668 is a wasteful number, since it uses less digits than its factorization.

3638578325668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10310452 (or 10310450 counting only the distinct ones).

The product of its digits is 1045094400, while the sum is 70.

The spelling of 3638578325668 in words is "three trillion, six hundred thirty-eight billion, five hundred seventy-eight million, three hundred twenty-five thousand, six hundred sixty-eight".