38181216771 has 12 divisors (see below), whose sum is σ = 55300925472. Its totient is φ = 25384784976.

The previous prime is 38181216761. The next prime is 38181216797. The reversal of 38181216771 is 17761218183.

It is not a de Polignac number, because 38181216771 - 2⁷ = 38181216643 is a prime.

It is a super-2 number, since 2×38181216771² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38181216721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5776476 + ... + 5783081.

It is an arithmetic number, because the mean of its divisors is an integer number (4608410456).

Almost surely, 2^38181216771 is an apocalyptic number.

38181216771 is a deficient number, since it is larger than the sum of its proper divisors (17119708701).

38181216771 is a wasteful number, since it uses less digits than its factorization.

38181216771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11559930 (or 11559927 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The spelling of 38181216771 in words is "thirty-eight billion, one hundred eighty-one million, two hundred sixteen thousand, seven hundred seventy-one".