5661456356459 has 2 divisors, whose sum is σ = 5661456356460. Its totient is φ = 5661456356458.

The previous prime is 5661456356429. The next prime is 5661456356473. The reversal of 5661456356459 is 9546536541665.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5661456356459 - 2²⁰ = 5661455307883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5661456356395 and 5661456356404.

It is not a weakly prime, because it can be changed into another prime (5661456356429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830728178229 + 2830728178230.

It is an arithmetic number, because the mean of its divisors is an integer number (2830728178230).

Almost surely, 2^{5661456356459} is an apocalyptic number.

5661456356459 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661456356459 is an equidigital number, since it uses as much as digits as its factorization.

5661456356459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920000, while the sum is 65.

The spelling of 5661456356459 in words is "five trillion, six hundred sixty-one billion, four hundred fifty-six million, three hundred fifty-six thousand, four hundred fifty-nine".