5561646461655 has 32 divisors (see below), whose sum is σ = 9423356958144. Its totient is φ = 2791351074816.

The previous prime is 5561646461611. The next prime is 5561646461711.

5561646461655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5561646461655 - 2¹⁸ = 5561646199511 is a prime.

It is a super-2 number, since 2×5561646461655² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421039 + ... + 3361631.

It is an arithmetic number, because the mean of its divisors is an integer number (294479904942).

Almost surely, 2^{5561646461655} is an apocalyptic number.

5561646461655 is a deficient number, since it is larger than the sum of its proper divisors (3861710496489).

5561646461655 is a wasteful number, since it uses less digits than its factorization.

5561646461655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948035.

The product of its digits is 77760000, while the sum is 60.

The spelling of 5561646461655 in words is "five trillion, five hundred sixty-one billion, six hundred forty-six million, four hundred sixty-one thousand, six hundred fifty-five".