253608323993 has 2 divisors, whose sum is σ = 253608323994. Its totient is φ = 253608323992.

The previous prime is 253608323909. The next prime is 253608324007. The reversal of 253608323993 is 399323806352.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202309244944 + 51299079049 = 449788^2 + 226493^2 .

It is a cyclic number.

It is not a de Polignac number, because 253608323993 - 2¹⁰ = 253608322969 is a prime.

It is not a weakly prime, because it can be changed into another prime (253608323093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126804161996 + 126804161997.

It is an arithmetic number, because the mean of its divisors is an integer number (126804161997).

Almost surely, 2^253608323993 is an apocalyptic number.

It is an amenable number.

253608323993 is a deficient number, since it is larger than the sum of its proper divisors (1).

253608323993 is an equidigital number, since it uses as much as digits as its factorization.

253608323993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6298560, while the sum is 53.

The spelling of 253608323993 in words is "two hundred fifty-three billion, six hundred eight million, three hundred twenty-three thousand, nine hundred ninety-three".