215205424204 has 6 divisors (see below), whose sum is σ = 376609492364. Its totient is φ = 107602712100.

The previous prime is 215205424199. The next prime is 215205424207. The reversal of 215205424204 is 402424502512.

It is not an unprimeable number, because it can be changed into a prime (215205424207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26900678022 + ... + 26900678029.

Almost surely, 2^215205424204 is an apocalyptic number.

It is an amenable number.

215205424204 is a deficient number, since it is larger than the sum of its proper divisors (161404068160).

215205424204 is a wasteful number, since it uses less digits than its factorization.

215205424204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53801356055 (or 53801356053 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 215205424204 its reverse (402424502512), we get a palindrome (617629926716).

The spelling of 215205424204 in words is "two hundred fifteen billion, two hundred five million, four hundred twenty-four thousand, two hundred four".