20337020366987 has 2 divisors, whose sum is σ = 20337020366988. Its totient is φ = 20337020366986.

The previous prime is 20337020366969. The next prime is 20337020367091. The reversal of 20337020366987 is 78966302073302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20337020366987 - 2³⁸ = 20062142460043 is a prime.

It is not a weakly prime, because it can be changed into another prime (20337020366947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10168510183493 + 10168510183494.

It is an arithmetic number, because the mean of its divisors is an integer number (10168510183494).

Almost surely, 2^{20337020366987} is an apocalyptic number.

20337020366987 is a deficient number, since it is larger than the sum of its proper divisors (1).

20337020366987 is an equidigital number, since it uses as much as digits as its factorization.

20337020366987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13716864, while the sum is 56.

The spelling of 20337020366987 in words is "twenty trillion, three hundred thirty-seven billion, twenty million, three hundred sixty-six thousand, nine hundred eighty-seven".