638602582673 has 8 divisors (see below), whose sum is σ = 696688744896. Its totient is φ = 580521650800.

The previous prime is 638602582643. The next prime is 638602582697. The reversal of 638602582673 is 376285206836.

638602582673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-638602582673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (638602582643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1050086 + ... + 1542687.

It is an arithmetic number, because the mean of its divisors is an integer number (87086093112).

Almost surely, 2^638602582673 is an apocalyptic number.

It is an amenable number.

638602582673 is a deficient number, since it is larger than the sum of its proper divisors (58086162223).

638602582673 is a wasteful number, since it uses less digits than its factorization.

638602582673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615175.

The product of its (nonzero) digits is 17418240, while the sum is 56.

The spelling of 638602582673 in words is "six hundred thirty-eight billion, six hundred two million, five hundred eighty-two thousand, six hundred seventy-three".