38503881161 has 2 divisors, whose sum is σ = 38503881162. Its totient is φ = 38503881160.

The previous prime is 38503881127. The next prime is 38503881217. The reversal of 38503881161 is 16118830583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37861765561 + 642115600 = 194581^2 + 25340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38503881161 is a prime.

It is not a weakly prime, because it can be changed into another prime (38503881061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19251940580 + 19251940581.

It is an arithmetic number, because the mean of its divisors is an integer number (19251940581).

Almost surely, 2^38503881161 is an apocalyptic number.

It is an amenable number.

38503881161 is a deficient number, since it is larger than the sum of its proper divisors (1).

38503881161 is an equidigital number, since it uses as much as digits as its factorization.

38503881161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 38503881161 in words is "thirty-eight billion, five hundred three million, eight hundred eighty-one thousand, one hundred sixty-one".