561100050506 has 8 divisors (see below), whose sum is σ = 841697602020. Its totient is φ = 280534183168.

The previous prime is 561100050479. The next prime is 561100050521. The reversal of 561100050506 is 605050001165.

It can be written as a sum of positive squares in 2 ways, for example, as 506102765281 + 54997285225 = 711409^2 + 234515^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7876721 + ... + 7947636.

Almost surely, 2^561100050506 is an apocalyptic number.

561100050506 is a deficient number, since it is larger than the sum of its proper divisors (280597551514).

561100050506 is a wasteful number, since it uses less digits than its factorization.

561100050506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15842088.

The product of its (nonzero) digits is 4500, while the sum is 29.

The spelling of 561100050506 in words is "five hundred sixty-one billion, one hundred million, fifty thousand, five hundred six".