561444478386 has 48 divisors (see below), whose sum is σ = 1265759750304. Its totient is φ = 164646456000.

The previous prime is 561444478381. The next prime is 561444478421. The reversal of 561444478386 is 683874444165.

561444478386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (561444478381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4362555 + ... + 4489406.

It is an arithmetic number, because the mean of its divisors is an integer number (26369994798).

Almost surely, 2^561444478386 is an apocalyptic number.

561444478386 is an abundant number, since it is smaller than the sum of its proper divisors (704315271918).

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

561444478386 is a wasteful number, since it uses less digits than its factorization.

561444478386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8852039 (or 8852008 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 60.

The spelling of 561444478386 in words is "five hundred sixty-one billion, four hundred forty-four million, four hundred seventy-eight thousand, three hundred eighty-six".