56659786899511 has 2 divisors, whose sum is σ = 56659786899512. Its totient is φ = 56659786899510.

The previous prime is 56659786899493. The next prime is 56659786899589. The reversal of 56659786899511 is 11599868795665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56659786899511 - 2¹⁵ = 56659786866743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56659786891511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28329893449755 + 28329893449756.

It is an arithmetic number, because the mean of its divisors is an integer number (28329893449756).

Almost surely, 2^{56659786899511} is an apocalyptic number.

56659786899511 is a deficient number, since it is larger than the sum of its proper divisors (1).

56659786899511 is an equidigital number, since it uses as much as digits as its factorization.

56659786899511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8817984000, while the sum is 85.

The spelling of 56659786899511 in words is "fifty-six trillion, six hundred fifty-nine billion, seven hundred eighty-six million, eight hundred ninety-nine thousand, five hundred eleven".