30638681004 has 12 divisors (see below), whose sum is σ = 71490255704. Its totient is φ = 10212893664.

The previous prime is 30638680997. The next prime is 30638681071. The reversal of 30638681004 is 40018683603.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276611697 + ... + 1276611720.

Almost surely, 2^30638681004 is an apocalyptic number.

It is an amenable number.

30638681004 is an abundant number, since it is smaller than the sum of its proper divisors (40851574700).

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

30638681004 is a wasteful number, since it uses less digits than its factorization.

30638681004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553223424 (or 2553223422 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 30638681004 in words is "thirty billion, six hundred thirty-eight million, six hundred eighty-one thousand, four".