5561322656520 has 128 divisors (see below), whose sum is σ = 17654560727040. Its totient is φ = 1398560782080.

The previous prime is 5561322656507. The next prime is 5561322656563. The reversal of 5561322656520 is 256562231655.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 5561322656520.

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, 13993984 + ... + 14385903.

It is an arithmetic number, because the mean of its divisors is an integer number (137926255680).

Almost surely, 2^{5561322656520} is an apocalyptic number.

It is an amenable number.

5561322656520 is an abundant number, since it is smaller than the sum of its proper divisors (12093238070520).

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

5561322656520 is a wasteful number, since it uses less digits than its factorization.

5561322656520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28379995 (or 28379991 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 48.

The spelling of 5561322656520 in words is "five trillion, five hundred sixty-one billion, three hundred twenty-two million, six hundred fifty-six thousand, five hundred twenty".