638824115634 has 16 divisors (see below), whose sum is σ = 1277680951872. Its totient is φ = 212935918448.

The previous prime is 638824115603. The next prime is 638824115651. The reversal of 638824115634 is 436511428836.

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, 1105809 + ... + 1581284.

It is an arithmetic number, because the mean of its divisors is an integer number (79855059492).

Almost surely, 2^638824115634 is an apocalyptic number.

638824115634 is an abundant number, since it is smaller than the sum of its proper divisors (638856836238).

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

638824115634 is a wasteful number, since it uses less digits than its factorization.

638824115634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726721.

The product of its digits is 3317760, while the sum is 51.

The spelling of 638824115634 in words is "six hundred thirty-eight billion, eight hundred twenty-four million, one hundred fifteen thousand, six hundred thirty-four".