5561491830172 has 6 divisors (see below), whose sum is σ = 9732610702808. Its totient is φ = 2780745915084.

The previous prime is 5561491830157. The next prime is 5561491830203. The reversal of 5561491830172 is 2710381941655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695186478768 + ... + 695186478775.

It is a 1-persistent number, because it is pandigital, but 2⋅5561491830172 = 11122983660344 is not.

Almost surely, 2^{5561491830172} is an apocalyptic number.

It is an amenable number.

5561491830172 is a deficient number, since it is larger than the sum of its proper divisors (4171118872636).

5561491830172 is a wasteful number, since it uses less digits than its factorization.

5561491830172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390372957547 (or 1390372957545 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 5561491830172 in words is "five trillion, five hundred sixty-one billion, four hundred ninety-one million, eight hundred thirty thousand, one hundred seventy-two".