38782885221 has 12 divisors (see below), whose sum is σ = 56199854880. Its totient is φ = 25772119080.

The previous prime is 38782885217. The next prime is 38782885241. The reversal of 38782885221 is 12258828783.

38782885221 is a `hidden beast` number, since 38 + 7 + 8 + 2 + 88 + 522 + 1 = 666.

It is not a de Polignac number, because 38782885221 - 2² = 38782885217 is a prime.

It is a super-2 number, since 2×38782885221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38782885241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6925191 + ... + 6930788.

It is an arithmetic number, because the mean of its divisors is an integer number (4683321240).

Almost surely, 2^38782885221 is an apocalyptic number.

It is an amenable number.

38782885221 is a deficient number, since it is larger than the sum of its proper divisors (17416969659).

38782885221 is a wasteful number, since it uses less digits than its factorization.

38782885221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13856296 (or 13856293 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 54.

The spelling of 38782885221 in words is "thirty-eight billion, seven hundred eighty-two million, eight hundred eighty-five thousand, two hundred twenty-one".