5561553641812 has 24 divisors (see below), whose sum is σ = 11123184885120. Its totient is φ = 2383506360480.

The previous prime is 5561553641807. The next prime is 5561553641857. The reversal of 5561553641812 is 2181463551655.

It is a self number, because there is not a number n which added to its sum of digits gives 5561553641812.

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, 3934362 + ... + 5157742.

It is an arithmetic number, because the mean of its divisors is an integer number (463466036880).

Almost surely, 2^{5561553641812} is an apocalyptic number.

It is an amenable number.

5561553641812 is an abundant number, since it is smaller than the sum of its proper divisors (5561631243308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5561553641812 is a wasteful number, since it uses less digits than its factorization.

5561553641812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385751 (or 1385749 counting only the distinct ones).

The product of its digits is 4320000, while the sum is 52.

The spelling of 5561553641812 in words is "five trillion, five hundred sixty-one billion, five hundred fifty-three million, six hundred forty-one thousand, eight hundred twelve".