561572850671678 has 8 divisors (see below), whose sum is σ = 891909821655072. Its totient is φ = 264269576786656.

The previous prime is 561572850671659. The next prime is 561572850671683. The reversal of 561572850671678 is 876176058275165.

It is a happy number.

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

It is a super-2 number, since 2×561572850671678² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8258424274550 + ... + 8258424274617.

It is an arithmetic number, because the mean of its divisors is an integer number (111488727706884).

Almost surely, 2^{561572850671678} is an apocalyptic number.

561572850671678 is a deficient number, since it is larger than the sum of its proper divisors (330336970983394).

561572850671678 is a wasteful number, since it uses less digits than its factorization.

561572850671678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16516848549186.

The product of its (nonzero) digits is 1185408000, while the sum is 74.

The spelling of 561572850671678 in words is "five hundred sixty-one trillion, five hundred seventy-two billion, eight hundred fifty million, six hundred seventy-one thousand, six hundred seventy-eight".