215040712253 has 2 divisors, whose sum is σ = 215040712254. Its totient is φ = 215040712252.

The previous prime is 215040712157. The next prime is 215040712267. The reversal of 215040712253 is 352217040512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189661992004 + 25378720249 = 435502^2 + 159307^2 .

It is a cyclic number.

It is not a de Polignac number, because 215040712253 - 2⁸ = 215040711997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215040712553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107520356126 + 107520356127.

It is an arithmetic number, because the mean of its divisors is an integer number (107520356127).

Almost surely, 2^215040712253 is an apocalyptic number.

It is an amenable number.

215040712253 is a deficient number, since it is larger than the sum of its proper divisors (1).

215040712253 is an equidigital number, since it uses as much as digits as its factorization.

215040712253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 32.

Adding to 215040712253 its reverse (352217040512), we get a palindrome (567257752765).

The spelling of 215040712253 in words is "two hundred fifteen billion, forty million, seven hundred twelve thousand, two hundred fifty-three".