5561656061155 has 4 divisors (see below), whose sum is σ = 6673987273392. Its totient is φ = 4449324848920.

The previous prime is 5561656061131. The next prime is 5561656061161. The reversal of 5561656061155 is 5511606561655.

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

It is a de Polignac number, because none of the positive numbers 2^k-5561656061155 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556165606111 + ... + 556165606120.

It is an arithmetic number, because the mean of its divisors is an integer number (1668496818348).

Almost surely, 2^{5561656061155} is an apocalyptic number.

5561656061155 is a deficient number, since it is larger than the sum of its proper divisors (1112331212237).

5561656061155 is a wasteful number, since it uses less digits than its factorization.

5561656061155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112331212236.

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

The spelling of 5561656061155 in words is "five trillion, five hundred sixty-one billion, six hundred fifty-six million, sixty-one thousand, one hundred fifty-five".