38781368064 has 108 divisors (see below), whose sum is σ = 111903992200. Its totient is φ = 12916979712.

The previous prime is 38781368053. The next prime is 38781368089. The reversal of 38781368064 is 46086318783.

It is a self number, because there is not a number n which added to its sum of digits gives 38781368064.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3286527 + ... + 3298305.

Almost surely, 2^38781368064 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 38781368064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55951996100).

38781368064 is an abundant number, since it is smaller than the sum of its proper divisors (73122624136).

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

38781368064 is a wasteful number, since it uses less digits than its factorization.

38781368064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13230 (or 13213 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 38781368064 in words is "thirty-eight billion, seven hundred eighty-one million, three hundred sixty-eight thousand, sixty-four".