42644404220 has 48 divisors (see below), whose sum is σ = 100077266016. Its totient is φ = 15128832000.

The previous prime is 42644404207. The next prime is 42644404237. The reversal of 42644404220 is 2240444624.

It is a super-2 number, since 2×42644404220² (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, 2354861 + ... + 2372900.

It is an arithmetic number, because the mean of its divisors is an integer number (2084943042).

Almost surely, 2^42644404220 is an apocalyptic number.

It is an amenable number.

42644404220 is an abundant number, since it is smaller than the sum of its proper divisors (57432861796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42644404220 is a wasteful number, since it uses less digits than its factorization.

42644404220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4727822 (or 4727820 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 42644404220 its reverse (2240444624), we get a palindrome (44884848844).

It can be divided in two parts, 42644404 and 220, that added together give a palindrome (42644624).

The spelling of 42644404220 in words is "forty-two billion, six hundred forty-four million, four hundred four thousand, two hundred twenty".