20004310521137 has 2 divisors, whose sum is σ = 20004310521138. Its totient is φ = 20004310521136.

The previous prime is 20004310521077. The next prime is 20004310521149. The reversal of 20004310521137 is 73112501340002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13343415402496 + 6660895118641 = 3652864^2 + 2580871^2 .

It is a cyclic number.

It is not a de Polignac number, because 20004310521137 - 2²⁰ = 20004309472561 is a prime.

It is not a weakly prime, because it can be changed into another prime (20004310521737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002155260568 + 10002155260569.

It is an arithmetic number, because the mean of its divisors is an integer number (10002155260569).

Almost surely, 2^{20004310521137} is an apocalyptic number.

It is an amenable number.

20004310521137 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004310521137 is an equidigital number, since it uses as much as digits as its factorization.

20004310521137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 20004310521137 its reverse (73112501340002), we get a palindrome (93116811861139).

The spelling of 20004310521137 in words is "twenty trillion, four billion, three hundred ten million, five hundred twenty-one thousand, one hundred thirty-seven".