638462013200 has 120 divisors (see below), whose sum is σ = 1673821919136. Its totient is φ = 232102656000.

The previous prime is 638462013199. The next prime is 638462013227. The reversal of 638462013200 is 2310264836.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17277944 + ... + 17314856.

Almost surely, 2^638462013200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 638462013200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (836910959568).

638462013200 is an abundant number, since it is smaller than the sum of its proper divisors (1035359905936).

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

638462013200 is a wasteful number, since it uses less digits than its factorization.

638462013200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40873 (or 40862 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 638462013200 in words is "six hundred thirty-eight billion, four hundred sixty-two million, thirteen thousand, two hundred".