561490305480 has 160 divisors (see below), whose sum is σ = 2032403095800. Its totient is φ = 138212987904.

The previous prime is 561490305473. The next prime is 561490305491. The reversal of 561490305480 is 84503094165.

561490305480 is a `hidden beast` number, since 5 + 6 + 1 + 490 + 30 + 54 + 80 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 432524567556 + 128965737924 = 657666^2 + 359118^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6623245 + ... + 6707484.

Almost surely, 2^561490305480 is an apocalyptic number.

It is an amenable number.

561490305480 is an abundant number, since it is smaller than the sum of its proper divisors (1470912790320).

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

561490305480 is a wasteful number, since it uses less digits than its factorization.

561490305480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13330765 (or 13330752 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 561490305480 in words is "five hundred sixty-one billion, four hundred ninety million, three hundred five thousand, four hundred eighty".