561361405134604 has 48 divisors (see below), whose sum is σ = 1035510457383360. Its totient is φ = 265750635110400.

The previous prime is 561361405134553. The next prime is 561361405134623. The reversal of 561361405134604 is 406431504163165.

It is a super-2 number, since 2×561361405134604² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28369372 + ... + 43903804.

It is an arithmetic number, because the mean of its divisors is an integer number (21573134528820).

Almost surely, 2^{561361405134604} is an apocalyptic number.

It is an amenable number.

561361405134604 is a deficient number, since it is larger than the sum of its proper divisors (474149052248756).

561361405134604 is a wasteful number, since it uses less digits than its factorization.

561361405134604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15538450 (or 15538448 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 49.

Adding to 561361405134604 its reverse (406431504163165), we get a palindrome (967792909297769).

The spelling of 561361405134604 in words is "five hundred sixty-one trillion, three hundred sixty-one billion, four hundred five million, one hundred thirty-four thousand, six hundred four".