561612454346548 has 48 divisors (see below), whose sum is σ = 1119049718814720. Its totient is φ = 244121614149600.

The previous prime is 561612454346311. The next prime is 561612454346551. The reversal of 561612454346548 is 845643454216165.

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 561612454346548.

It is a congruent 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, 61300008 + ... + 69863551.

It is an arithmetic number, because the mean of its divisors is an integer number (23313535808640).

Almost surely, 2^{561612454346548} is an apocalyptic number.

It is an amenable number.

561612454346548 is a deficient number, since it is larger than the sum of its proper divisors (557437264468172).

561612454346548 is a wasteful number, since it uses less digits than its factorization.

561612454346548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131167828 (or 131167826 counting only the distinct ones).

The product of its digits is 331776000, while the sum is 64.

The spelling of 561612454346548 in words is "five hundred sixty-one trillion, six hundred twelve billion, four hundred fifty-four million, three hundred forty-six thousand, five hundred forty-eight".