42220024664 has 8 divisors (see below), whose sum is σ = 79162546260. Its totient is φ = 21110012328.

The previous prime is 42220024663. The next prime is 42220024687. The reversal of 42220024664 is 46642002224.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 42220024664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42220024661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2638751534 + ... + 2638751549.

Almost surely, 2^42220024664 is an apocalyptic number.

It is an amenable number.

42220024664 is a deficient number, since it is larger than the sum of its proper divisors (36942521596).

42220024664 is a wasteful number, since it uses less digits than its factorization.

42220024664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277503089 (or 5277503085 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 42220024664 its reverse (46642002224), we get a palindrome (88862026888).

The spelling of 42220024664 in words is "forty-two billion, two hundred twenty million, twenty-four thousand, six hundred sixty-four".