42244660646 has 16 divisors (see below), whose sum is σ = 67710012480. Its totient is φ = 19697454720.

The previous prime is 42244660643. The next prime is 42244660651. The reversal of 42244660646 is 64606644224.

It is a super-2 number, since 2×42244660646² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42244660597 and 42244660606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42244660643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5695790 + ... + 5703201.

It is an arithmetic number, because the mean of its divisors is an integer number (4231875780).

Almost surely, 2^42244660646 is an apocalyptic number.

42244660646 is a deficient number, since it is larger than the sum of its proper divisors (25465351834).

42244660646 is a wasteful number, since it uses less digits than its factorization.

42244660646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11399119.

The product of its (nonzero) digits is 1327104, while the sum is 44.

The spelling of 42244660646 in words is "forty-two billion, two hundred forty-four million, six hundred sixty thousand, six hundred forty-six".