638476930160 has 160 divisors (see below), whose sum is σ = 1589334115392. Its totient is φ = 237693173760.

The previous prime is 638476930067. The next prime is 638476930171. The reversal of 638476930160 is 61039674836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70227215 + ... + 70236305.

Almost surely, 2^638476930160 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 638476930160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (794667057696).

638476930160 is an abundant number, since it is smaller than the sum of its proper divisors (950857185232).

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

638476930160 is a wasteful number, since it uses less digits than its factorization.

638476930160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9691 (or 9685 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 53.

The spelling of 638476930160 in words is "six hundred thirty-eight billion, four hundred seventy-six million, nine hundred thirty thousand, one hundred sixty".