215516201244 has 48 divisors (see below), whose sum is σ = 519135998976. Its totient is φ = 69515568000.

The previous prime is 215516201231. The next prime is 215516201249. The reversal of 215516201244 is 442102615512.

It is a happy number.

215516201244 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215516201249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8413384 + ... + 8438960.

It is an arithmetic number, because the mean of its divisors is an integer number (10815333312).

Almost surely, 2^215516201244 is an apocalyptic number.

It is an amenable number.

215516201244 is an abundant number, since it is smaller than the sum of its proper divisors (303619797732).

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

215516201244 is a wasteful number, since it uses less digits than its factorization.

215516201244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48266 (or 48264 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

Adding to 215516201244 its reverse (442102615512), we get a palindrome (657618816756).

The spelling of 215516201244 in words is "two hundred fifteen billion, five hundred sixteen million, two hundred one thousand, two hundred forty-four".