38806663501 has 2 divisors, whose sum is σ = 38806663502. Its totient is φ = 38806663500.

The previous prime is 38806663397. The next prime is 38806663541. The reversal of 38806663501 is 10536660883.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25376171401 + 13430492100 = 159299^2 + 115890^2 .

It is a cyclic number.

It is not a de Polignac number, because 38806663501 - 2³¹ = 36659179853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38806663541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19403331750 + 19403331751.

It is an arithmetic number, because the mean of its divisors is an integer number (19403331751).

Almost surely, 2^38806663501 is an apocalyptic number.

It is an amenable number.

38806663501 is a deficient number, since it is larger than the sum of its proper divisors (1).

38806663501 is an equidigital number, since it uses as much as digits as its factorization.

38806663501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 38806663501 in words is "thirty-eight billion, eight hundred six million, six hundred sixty-three thousand, five hundred one".