42240561566 has 32 divisors (see below), whose sum is σ = 72704812032. Its totient is φ = 18030126240.

The previous prime is 42240561547. The next prime is 42240561593. The reversal of 42240561566 is 66516504224.

It is a super-2 number, since 2×42240561566² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4244156 + ... + 4254096.

It is an arithmetic number, because the mean of its divisors is an integer number (2272025376).

Almost surely, 2^42240561566 is an apocalyptic number.

42240561566 is a deficient number, since it is larger than the sum of its proper divisors (30464250466).

42240561566 is a wasteful number, since it uses less digits than its factorization.

42240561566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11144.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 42240561566 in words is "forty-two billion, two hundred forty million, five hundred sixty-one thousand, five hundred sixty-six".