638632413233 has 8 divisors (see below), whose sum is σ = 643679616000. Its totient is φ = 633585501360.

The previous prime is 638632413193. The next prime is 638632413239. The reversal of 638632413233 is 332314236836.

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

It is a cyclic number.

It is not a de Polignac number, because 638632413233 - 2¹² = 638632409137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (638632413239) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7172018 + ... + 7260516.

It is an arithmetic number, because the mean of its divisors is an integer number (80459952000).

Almost surely, 2^638632413233 is an apocalyptic number.

It is an amenable number.

638632413233 is a deficient number, since it is larger than the sum of its proper divisors (5047202767).

638632413233 is a wasteful number, since it uses less digits than its factorization.

638632413233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145447.

The product of its digits is 1119744, while the sum is 44.

The spelling of 638632413233 in words is "six hundred thirty-eight billion, six hundred thirty-two million, four hundred thirteen thousand, two hundred thirty-three".