215120144004 has 24 divisors (see below), whose sum is σ = 518138842368. Its totient is φ = 69393594720.

The previous prime is 215120143999. The next prime is 215120144033. The reversal of 215120144004 is 400441021512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289139607 + ... + 289140350.

It is an arithmetic number, because the mean of its divisors is an integer number (21589118432).

Almost surely, 2^215120144004 is an apocalyptic number.

It is an amenable number.

215120144004 is an abundant number, since it is smaller than the sum of its proper divisors (303018698364).

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

215120144004 is a wasteful number, since it uses less digits than its factorization.

215120144004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578279995 (or 578279993 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 215120144004 its reverse (400441021512), we get a palindrome (615561165516).

The spelling of 215120144004 in words is "two hundred fifteen billion, one hundred twenty million, one hundred forty-four thousand, four".