38881255784 has 96 divisors (see below), whose sum is σ = 85362427080. Its totient is φ = 16554295296.

The previous prime is 38881255757. The next prime is 38881255799. The reversal of 38881255784 is 48755218883.

It can be written as a sum of positive squares in 4 ways, for example, as 37678692100 + 1202563684 = 194110^2 + 34678^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67384904 + ... + 67385480.

Almost surely, 2^38881255784 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 38881255784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42681213540).

38881255784 is an abundant number, since it is smaller than the sum of its proper divisors (46481171296).

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

38881255784 is a wasteful number, since it uses less digits than its factorization.

38881255784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427 (or 1416 counting only the distinct ones).

The product of its digits is 17203200, while the sum is 59.

The spelling of 38881255784 in words is "thirty-eight billion, eight hundred eighty-one million, two hundred fifty-five thousand, seven hundred eighty-four".