38638987008 has 72 divisors (see below), whose sum is σ = 102961798800. Its totient is φ = 12863913984.

The previous prime is 38638987007. The next prime is 38638987019. The reversal of 38638987008 is 80078983683.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38638987003) 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, 606328 + ... + 667016.

Almost surely, 2^38638987008 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 38638987008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51480899400).

38638987008 is an abundant number, since it is smaller than the sum of its proper divisors (64322811792).

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

38638987008 is an equidigital number, since it uses as much as digits as its factorization.

38638987008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61537 (or 61523 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 38638987008 in words is "thirty-eight billion, six hundred thirty-eight million, nine hundred eighty-seven thousand, eight".