253530443213 has 2 divisors, whose sum is σ = 253530443214. Its totient is φ = 253530443212.

The previous prime is 253530443171. The next prime is 253530443237. The reversal of 253530443213 is 312344035352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222012477124 + 31517966089 = 471182^2 + 177533^2 .

It is a cyclic number.

It is not a de Polignac number, because 253530443213 - 2¹² = 253530439117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253530443293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126765221606 + 126765221607.

It is an arithmetic number, because the mean of its divisors is an integer number (126765221607).

Almost surely, 2^253530443213 is an apocalyptic number.

It is an amenable number.

253530443213 is a deficient number, since it is larger than the sum of its proper divisors (1).

253530443213 is an equidigital number, since it uses as much as digits as its factorization.

253530443213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 253530443213 its reverse (312344035352), we get a palindrome (565874478565).

The spelling of 253530443213 in words is "two hundred fifty-three billion, five hundred thirty million, four hundred forty-three thousand, two hundred thirteen".