42215225644 has 12 divisors (see below), whose sum is σ = 76424115600. Its totient is φ = 20379764048.

The previous prime is 42215225629. The next prime is 42215225651. The reversal of 42215225644 is 44652251224.

It is a super-4 number, since 4×42215225644⁴ (a number of 44 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181962064 + ... + 181962295.

It is an arithmetic number, because the mean of its divisors is an integer number (6368676300).

Almost surely, 2^42215225644 is an apocalyptic number.

It is an amenable number.

42215225644 is a deficient number, since it is larger than the sum of its proper divisors (34208889956).

42215225644 is a wasteful number, since it uses less digits than its factorization.

42215225644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363924392 (or 363924390 counting only the distinct ones).

The product of its digits is 153600, while the sum is 37.

Adding to 42215225644 its reverse (44652251224), we get a palindrome (86867476868).

The spelling of 42215225644 in words is "forty-two billion, two hundred fifteen million, two hundred twenty-five thousand, six hundred forty-four".