215523241352 has 8 divisors (see below), whose sum is σ = 404106077550. Its totient is φ = 107761620672.

The previous prime is 215523241327. The next prime is 215523241363. The reversal of 215523241352 is 253142325512.

215523241352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 180977071396 + 34546169956 = 425414^2 + 185866^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×215523241352³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13470202577 + ... + 13470202592.

Almost surely, 2^215523241352 is an apocalyptic number.

It is an amenable number.

215523241352 is a deficient number, since it is larger than the sum of its proper divisors (188582836198).

215523241352 is a wasteful number, since it uses less digits than its factorization.

215523241352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26940405175 (or 26940405171 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

Adding to 215523241352 its reverse (253142325512), we get a palindrome (468665566864).

The spelling of 215523241352 in words is "two hundred fifteen billion, five hundred twenty-three million, two hundred forty-one thousand, three hundred fifty-two".