38355965129 has 2 divisors, whose sum is σ = 38355965130. Its totient is φ = 38355965128.

The previous prime is 38355965117. The next prime is 38355965161. The reversal of 38355965129 is 92156955383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22093849600 + 16262115529 = 148640^2 + 127523^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38355965129 is a prime.

It is not a weakly prime, because it can be changed into another prime (38355962129) 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, 19177982564 + 19177982565.

It is an arithmetic number, because the mean of its divisors is an integer number (19177982565).

Almost surely, 2^38355965129 is an apocalyptic number.

It is an amenable number.

38355965129 is a deficient number, since it is larger than the sum of its proper divisors (1).

38355965129 is an equidigital number, since it uses as much as digits as its factorization.

38355965129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748000, while the sum is 56.

The spelling of 38355965129 in words is "thirty-eight billion, three hundred fifty-five million, nine hundred sixty-five thousand, one hundred twenty-nine".