4987642289789 has 2 divisors, whose sum is σ = 4987642289790. Its totient is φ = 4987642289788.

The previous prime is 4987642289743. The next prime is 4987642289813. The reversal of 4987642289789 is 9879822467894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4856478802564 + 131163487225 = 2203742^2 + 362165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4987642289789 is a prime.

It is a super-2 number, since 2×4987642289789² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4987642289389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2493821144894 + 2493821144895.

It is an arithmetic number, because the mean of its divisors is an integer number (2493821144895).

Almost surely, 2^{4987642289789} is an apocalyptic number.

It is an amenable number.

4987642289789 is a deficient number, since it is larger than the sum of its proper divisors (1).

4987642289789 is an equidigital number, since it uses as much as digits as its factorization.

4987642289789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7023034368, while the sum is 83.

The spelling of 4987642289789 in words is "four trillion, nine hundred eighty-seven billion, six hundred forty-two million, two hundred eighty-nine thousand, seven hundred eighty-nine".