215442331144 has 16 divisors (see below), whose sum is σ = 403961555520. Its totient is φ = 107719249680.

The previous prime is 215442331103. The next prime is 215442331177. The reversal of 215442331144 is 441133244512.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313549 + ... + 727459.

It is an arithmetic number, because the mean of its divisors is an integer number (25247597220).

Almost surely, 2^215442331144 is an apocalyptic number.

It is an amenable number.

215442331144 is a deficient number, since it is larger than the sum of its proper divisors (188519224376).

215442331144 is a wasteful number, since it uses less digits than its factorization.

215442331144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478980 (or 478976 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

Adding to 215442331144 its reverse (441133244512), we get a palindrome (656575575656).

The spelling of 215442331144 in words is "two hundred fifteen billion, four hundred forty-two million, three hundred thirty-one thousand, one hundred forty-four".