38921572127 has 2 divisors, whose sum is σ = 38921572128. Its totient is φ = 38921572126.

The previous prime is 38921572121. The next prime is 38921572159. The reversal of 38921572127 is 72127512983.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38921572127 - 2¹⁰ = 38921571103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38921572121) 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 as a sum of consecutive naturals, namely, 19460786063 + 19460786064.

It is an arithmetic number, because the mean of its divisors is an integer number (19460786064).

Almost surely, 2^38921572127 is an apocalyptic number.

38921572127 is a deficient number, since it is larger than the sum of its proper divisors (1).

38921572127 is an equidigital number, since it uses as much as digits as its factorization.

38921572127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 47.

The spelling of 38921572127 in words is "thirty-eight billion, nine hundred twenty-one million, five hundred seventy-two thousand, one hundred twenty-seven".