20038738423087 has 2 divisors, whose sum is σ = 20038738423088. Its totient is φ = 20038738423086.

The previous prime is 20038738423031. The next prime is 20038738423091. The reversal of 20038738423087 is 78032483783002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20038738423087 - 2³¹ = 20036590939439 is a prime.

It is a super-5 number, since 5×20038738423087⁵ (a number of 68 digits) contains 55555 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20038738423097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10019369211543 + 10019369211544.

It is an arithmetic number, because the mean of its divisors is an integer number (10019369211544).

Almost surely, 2^{20038738423087} is an apocalyptic number.

20038738423087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20038738423087 is an equidigital number, since it uses as much as digits as its factorization.

20038738423087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10838016, while the sum is 55.

The spelling of 20038738423087 in words is "twenty trillion, thirty-eight billion, seven hundred thirty-eight million, four hundred twenty-three thousand, eighty-seven".