561215630506 has 8 divisors (see below), whose sum is σ = 841839966180. Its totient is φ = 280602308448.

The previous prime is 561215630491. The next prime is 561215630539. The reversal of 561215630506 is 605036512165.

It can be written as a sum of positive squares in 2 ways, for example, as 497807858025 + 63407772481 = 705555^2 + 251809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2624811 + ... + 2830558.

Almost surely, 2^561215630506 is an apocalyptic number.

561215630506 is a deficient number, since it is larger than the sum of its proper divisors (280624335674).

561215630506 is a wasteful number, since it uses less digits than its factorization.

561215630506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5506808.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 561215630506 in words is "five hundred sixty-one billion, two hundred fifteen million, six hundred thirty thousand, five hundred six".