215233564170253 has 2 divisors, whose sum is σ = 215233564170254. Its totient is φ = 215233564170252.

The previous prime is 215233564170241. The next prime is 215233564170301. The reversal of 215233564170253 is 352071465332512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128031080666724 + 87202483503529 = 11315082^2 + 9338227^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215233564170253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215233564170197 and 215233564170206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215233564171253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107616782085126 + 107616782085127.

It is an arithmetic number, because the mean of its divisors is an integer number (107616782085127).

Almost surely, 2^{215233564170253} is an apocalyptic number.

It is an amenable number.

215233564170253 is a deficient number, since it is larger than the sum of its proper divisors (1).

215233564170253 is an equidigital number, since it uses as much as digits as its factorization.

215233564170253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536000, while the sum is 49.

The spelling of 215233564170253 in words is "two hundred fifteen trillion, two hundred thirty-three billion, five hundred sixty-four million, one hundred seventy thousand, two hundred fifty-three".