5561178956779 has 8 divisors (see below), whose sum is σ = 5714321287088. Its totient is φ = 5408186110560.

The previous prime is 5561178956647. The next prime is 5561178956789. The reversal of 5561178956779 is 9776598711655.

5561178956779 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5561178956779 - 2²⁵ = 5561145402347 is a prime.

It is a super-2 number, since 2×5561178956779² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5561178956789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37295592 + ... + 37444405.

It is an arithmetic number, because the mean of its divisors is an integer number (714290160886).

Almost surely, 2^{5561178956779} is an apocalyptic number.

5561178956779 is a deficient number, since it is larger than the sum of its proper divisors (153142330309).

5561178956779 is a wasteful number, since it uses less digits than its factorization.

5561178956779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74742045.

The product of its digits is 1000188000, while the sum is 76.

The spelling of 5561178956779 in words is "five trillion, five hundred sixty-one billion, one hundred seventy-eight million, nine hundred fifty-six thousand, seven hundred seventy-nine".