5561061105601 has 4 divisors (see below), whose sum is σ = 5568368676804. Its totient is φ = 5553753534400.

The previous prime is 5561061105553. The next prime is 5561061105623. The reversal of 5561061105601 is 1065011601655.

5561061105601 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1929387672576 + 3631673433025 = 1389024^2 + 1905695^2 .

It is a cyclic number.

It is not a de Polignac number, because 5561061105601 - 2⁷ = 5561061105473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5561061105631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3653784460 + ... + 3653785981.

It is an arithmetic number, because the mean of its divisors is an integer number (1392092169201).

Almost surely, 2^{5561061105601} is an apocalyptic number.

It is an amenable number.

5561061105601 is a deficient number, since it is larger than the sum of its proper divisors (7307571203).

5561061105601 is an equidigital number, since it uses as much as digits as its factorization.

5561061105601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7307571202.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 5561061105601 in words is "five trillion, five hundred sixty-one billion, sixty-one million, one hundred five thousand, six hundred one".