56603985796849 has 2 divisors, whose sum is σ = 56603985796850. Its totient is φ = 56603985796848.

The previous prime is 56603985796751. The next prime is 56603985796867. The reversal of 56603985796849 is 94869758930665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53559198112225 + 3044787684624 = 7318415^2 + 1744932^2 .

It is a cyclic number.

It is not a de Polignac number, because 56603985796849 - 2³⁵ = 56569626058481 is a prime.

It is a super-2 number, since 2×56603985796849² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56603985796879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28301992898424 + 28301992898425.

It is an arithmetic number, because the mean of its divisors is an integer number (28301992898425).

Almost surely, 2^{56603985796849} is an apocalyptic number.

It is an amenable number.

56603985796849 is a deficient number, since it is larger than the sum of its proper divisors (1).

56603985796849 is an equidigital number, since it uses as much as digits as its factorization.

56603985796849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21163161600, while the sum is 85.

The spelling of 56603985796849 in words is "fifty-six trillion, six hundred three billion, nine hundred eighty-five million, seven hundred ninety-six thousand, eight hundred forty-nine".