561243451355116 has 48 divisors (see below), whose sum is σ = 1059672224360736. Its totient is φ = 259106961112064.

The previous prime is 561243451355107. The next prime is 561243451355123. The reversal of 561243451355116 is 611553154342165.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31144350 + ... + 45743386.

It is an arithmetic number, because the mean of its divisors is an integer number (22076504674182).

Almost surely, 2^{561243451355116} is an apocalyptic number.

It is an amenable number.

561243451355116 is a deficient number, since it is larger than the sum of its proper divisors (498428773005620).

561243451355116 is a wasteful number, since it uses less digits than its factorization.

561243451355116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14609778 (or 14609776 counting only the distinct ones).

The product of its digits is 6480000, while the sum is 52.

The spelling of 561243451355116 in words is "five hundred sixty-one trillion, two hundred forty-three billion, four hundred fifty-one million, three hundred fifty-five thousand, one hundred sixteen".