42611256566 has 8 divisors (see below), whose sum is σ = 67280931480. Its totient is φ = 20184279408.

The previous prime is 42611256563. The next prime is 42611256599. The reversal of 42611256566 is 66565211624.

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

It is a super-2 number, since 2×42611256566² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42611256563) 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, 560674391 + ... + 560674466.

It is an arithmetic number, because the mean of its divisors is an integer number (8410116435).

Almost surely, 2^42611256566 is an apocalyptic number.

42611256566 is a deficient number, since it is larger than the sum of its proper divisors (24669674914).

42611256566 is a wasteful number, since it uses less digits than its factorization.

42611256566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121348878.

The product of its digits is 518400, while the sum is 44.

The spelling of 42611256566 in words is "forty-two billion, six hundred eleven million, two hundred fifty-six thousand, five hundred sixty-six".