38662813129 has 2 divisors, whose sum is σ = 38662813130. Its totient is φ = 38662813128.

The previous prime is 38662813109. The next prime is 38662813139. The reversal of 38662813129 is 92131826683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21100467600 + 17562345529 = 145260^2 + 132523^2 .

It is a cyclic number.

It is not a de Polignac number, because 38662813129 - 2²⁵ = 38629258697 is a prime.

It is not a weakly prime, because it can be changed into another prime (38662813109) 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, 19331406564 + 19331406565.

It is an arithmetic number, because the mean of its divisors is an integer number (19331406565).

Almost surely, 2^38662813129 is an apocalyptic number.

It is an amenable number.

38662813129 is a deficient number, since it is larger than the sum of its proper divisors (1).

38662813129 is an equidigital number, since it uses as much as digits as its factorization.

38662813129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 49.

The spelling of 38662813129 in words is "thirty-eight billion, six hundred sixty-two million, eight hundred thirteen thousand, one hundred twenty-nine".