56105510605549 has 16 divisors (see below), whose sum is σ = 56838753373248. Its totient is φ = 55376291976192.

The previous prime is 56105510605517. The next prime is 56105510605553. The reversal of 56105510605549 is 94550601550165.

It is a cyclic number.

It is not a de Polignac number, because 56105510605549 - 2⁵ = 56105510605517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56105510605496 and 56105510605505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56105510605049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76270669 + ... + 77002765.

It is an arithmetic number, because the mean of its divisors is an integer number (3552422085828).

Almost surely, 2^{56105510605549} is an apocalyptic number.

It is an amenable number.

56105510605549 is a deficient number, since it is larger than the sum of its proper divisors (733242767699).

56105510605549 is a wasteful number, since it uses less digits than its factorization.

56105510605549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734844.

The product of its (nonzero) digits is 4050000, while the sum is 52.

The spelling of 56105510605549 in words is "fifty-six trillion, one hundred five billion, five hundred ten million, six hundred five thousand, five hundred forty-nine".