253688542033 has 2 divisors, whose sum is σ = 253688542034. Its totient is φ = 253688542032.

The previous prime is 253688542031. The next prime is 253688542039. The reversal of 253688542033 is 330245886352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147039270849 + 106649271184 = 383457^2 + 326572^2 .

It is a cyclic number.

It is not a de Polignac number, because 253688542033 - 2¹ = 253688542031 is a prime.

Together with 253688542031, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (253688542031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126844271016 + 126844271017.

It is an arithmetic number, because the mean of its divisors is an integer number (126844271017).

Almost surely, 2^253688542033 is an apocalyptic number.

It is an amenable number.

253688542033 is a deficient number, since it is larger than the sum of its proper divisors (1).

253688542033 is an equidigital number, since it uses as much as digits as its factorization.

253688542033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4147200, while the sum is 49.

The spelling of 253688542033 in words is "two hundred fifty-three billion, six hundred eighty-eight million, five hundred forty-two thousand, thirty-three".