215012504244 has 12 divisors (see below), whose sum is σ = 501695843264. Its totient is φ = 71670834744.

The previous prime is 215012504243. The next prime is 215012504249. The reversal of 215012504244 is 442405210512.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×215012504244² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215012504243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8958854332 + ... + 8958854355.

Almost surely, 2^215012504244 is an apocalyptic number.

It is an amenable number.

215012504244 is an abundant number, since it is smaller than the sum of its proper divisors (286683339020).

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

215012504244 is a wasteful number, since it uses less digits than its factorization.

215012504244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17917708694 (or 17917708692 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 215012504244 its reverse (442405210512), we get a palindrome (657417714756).

The spelling of 215012504244 in words is "two hundred fifteen billion, twelve million, five hundred four thousand, two hundred forty-four".