215352315236 has 6 divisors (see below), whose sum is σ = 376866551670. Its totient is φ = 107676157616.

The previous prime is 215352315179. The next prime is 215352315251. The reversal of 215352315236 is 632513253512.

It can be written as a sum of positive squares in only one way, i.e., 208227942400 + 7124372836 = 456320^2 + 84406^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 215352315236.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26919039401 + ... + 26919039408.

It is an arithmetic number, because the mean of its divisors is an integer number (62811091945).

Almost surely, 2^215352315236 is an apocalyptic number.

It is an amenable number.

215352315236 is a deficient number, since it is larger than the sum of its proper divisors (161514236434).

215352315236 is a wasteful number, since it uses less digits than its factorization.

215352315236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53838078813 (or 53838078811 counting only the distinct ones).

The product of its digits is 162000, while the sum is 38.

Adding to 215352315236 its reverse (632513253512), we get a palindrome (847865568748).

The spelling of 215352315236 in words is "two hundred fifteen billion, three hundred fifty-two million, three hundred fifteen thousand, two hundred thirty-six".