38616363782181 has 24 divisors (see below), whose sum is σ = 57488607221760. Its totient is φ = 24965332167456.

The previous prime is 38616363782179. The next prime is 38616363782201. The reversal of 38616363782181 is 18128736361683.

It is a happy number.

38616363782181 is a `hidden beast` number, since 3 + 8 + 6 + 16 + 36 + 378 + 218 + 1 = 666.

It is not a de Polignac number, because 38616363782181 - 2¹ = 38616363782179 is a prime.

It is a super-2 number, since 2×38616363782181² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38616363782131) 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 23 ways as a sum of consecutive naturals, for example, 418722885 + ... + 418815098.

It is an arithmetic number, because the mean of its divisors is an integer number (2395358634240).

Almost surely, 2^{38616363782181} is an apocalyptic number.

It is an amenable number.

38616363782181 is a deficient number, since it is larger than the sum of its proper divisors (18872243439579).

38616363782181 is a wasteful number, since it uses less digits than its factorization.

38616363782181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837538145 (or 837538142 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 63.

The spelling of 38616363782181 in words is "thirty-eight trillion, six hundred sixteen billion, three hundred sixty-three million, seven hundred eighty-two thousand, one hundred eighty-one".