253642031363309 has 2 divisors, whose sum is σ = 253642031363310. Its totient is φ = 253642031363308.

The previous prime is 253642031363293. The next prime is 253642031363359. The reversal of 253642031363309 is 903363130246352.

It is an a-pointer prime, because the next prime (253642031363359) can be obtained adding 253642031363309 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221089837428100 + 32552193935209 = 14869090^2 + 5705453^2 .

It is a cyclic number.

It is not a de Polignac number, because 253642031363309 - 2⁴ = 253642031363293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253642031363359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126821015681654 + 126821015681655.

It is an arithmetic number, because the mean of its divisors is an integer number (126821015681655).

Almost surely, 2^{253642031363309} is an apocalyptic number.

It is an amenable number.

253642031363309 is a deficient number, since it is larger than the sum of its proper divisors (1).

253642031363309 is an equidigital number, since it uses as much as digits as its factorization.

253642031363309 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 50.

The spelling of 253642031363309 in words is "two hundred fifty-three trillion, six hundred forty-two billion, thirty-one million, three hundred sixty-three thousand, three hundred nine".