38663081716 has 18 divisors (see below), whose sum is σ = 78706988178. Its totient is φ = 16569892080.

The previous prime is 38663081711. The next prime is 38663081747. The reversal of 38663081716 is 61718036683.

It can be written as a sum of positive squares in only one way, i.e., 36712092816 + 1950988900 = 191604^2 + 44170^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 38663081716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38663081711) 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 5 ways as a sum of consecutive naturals, for example, 98630115 + ... + 98630506.

Almost surely, 2^38663081716 is an apocalyptic number.

It is an amenable number.

38663081716 is an abundant number, since it is smaller than the sum of its proper divisors (40043906462).

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

38663081716 is a wasteful number, since it uses less digits than its factorization.

38663081716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197260639 (or 197260630 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 38663081716 in words is "thirty-eight billion, six hundred sixty-three million, eighty-one thousand, seven hundred sixteen".