215143524404 has 6 divisors (see below), whose sum is σ = 376501167714. Its totient is φ = 107571762200.

The previous prime is 215143524313. The next prime is 215143524433. The reversal of 215143524404 is 404425341512.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 207523980304 + 7619544100 = 455548^2 + 87290^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 26892940547 + ... + 26892940554.

It is an arithmetic number, because the mean of its divisors is an integer number (62750194619).

Almost surely, 2^215143524404 is an apocalyptic number.

It is an amenable number.

215143524404 is a deficient number, since it is larger than the sum of its proper divisors (161357643310).

215143524404 is a wasteful number, since it uses less digits than its factorization.

215143524404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53785881105 (or 53785881103 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 215143524404 its reverse (404425341512), we get a palindrome (619568865916).

The spelling of 215143524404 in words is "two hundred fifteen billion, one hundred forty-three million, five hundred twenty-four thousand, four hundred four".