561491113006 has 4 divisors (see below), whose sum is σ = 842236669512. Its totient is φ = 280745556502.

The previous prime is 561491113003. The next prime is 561491113009. The reversal of 561491113006 is 600311194165.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (561491113003) and next prime (561491113009).

It is a super-3 number, since 3×561491113006³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561491113003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140372778250 + ... + 140372778253.

It is an arithmetic number, because the mean of its divisors is an integer number (210559167378).

Almost surely, 2^561491113006 is an apocalyptic number.

561491113006 is a deficient number, since it is larger than the sum of its proper divisors (280745556506).

561491113006 is a wasteful number, since it uses less digits than its factorization.

561491113006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280745556505.

The product of its (nonzero) digits is 19440, while the sum is 37.

The spelling of 561491113006 in words is "five hundred sixty-one billion, four hundred ninety-one million, one hundred thirteen thousand, six".