561100605506 has 8 divisors (see below), whose sum is σ = 961886752320. Its totient is φ = 240471688068.

The previous prime is 561100605503. The next prime is 561100605511. The reversal of 561100605506 is 605506001165.

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

It is not an unprimeable number, because it can be changed into a prime (561100605503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20039307326 + ... + 20039307353.

It is an arithmetic number, because the mean of its divisors is an integer number (120235844040).

Almost surely, 2^561100605506 is an apocalyptic number.

561100605506 is a deficient number, since it is larger than the sum of its proper divisors (400786146814).

561100605506 is a wasteful number, since it uses less digits than its factorization.

561100605506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40078614688.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 561100605506 in words is "five hundred sixty-one billion, one hundred million, six hundred five thousand, five hundred six".