5661561105016 has 32 divisors (see below), whose sum is σ = 11174323482000. Its totient is φ = 2681746569216.

The previous prime is 5661561104993. The next prime is 5661561105041. The reversal of 5661561105016 is 6105011651665.

It is a super-4 number, since 4×5661561105016⁴ (a number of 52 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9707470 + ... + 10274146.

Almost surely, 2^{5661561105016} is an apocalyptic number.

It is an amenable number.

5661561105016 is a deficient number, since it is larger than the sum of its proper divisors (5512762376984).

5661561105016 is a wasteful number, since it uses less digits than its factorization.

5661561105016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632431 (or 632427 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 5661561105016 in words is "five trillion, six hundred sixty-one billion, five hundred sixty-one million, one hundred five thousand, sixteen".