20832687500789 has 2 divisors, whose sum is σ = 20832687500790. Its totient is φ = 20832687500788.

The previous prime is 20832687500771. The next prime is 20832687500797. The reversal of 20832687500789 is 98700578623802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10512801099025 + 10319886401764 = 3242345^2 + 3212458^2 .

It is a cyclic number.

It is not a de Polignac number, because 20832687500789 - 2²⁴ = 20832670723573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20832687500719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10416343750394 + 10416343750395.

It is an arithmetic number, because the mean of its divisors is an integer number (10416343750395).

Almost surely, 2^{20832687500789} is an apocalyptic number.

It is an amenable number.

20832687500789 is a deficient number, since it is larger than the sum of its proper divisors (1).

20832687500789 is an equidigital number, since it uses as much as digits as its factorization.

20832687500789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81285120, while the sum is 65.

The spelling of 20832687500789 in words is "twenty trillion, eight hundred thirty-two billion, six hundred eighty-seven million, five hundred thousand, seven hundred eighty-nine".