253656023017 has 2 divisors, whose sum is σ = 253656023018. Its totient is φ = 253656023016.

The previous prime is 253656022967. The next prime is 253656023069. The reversal of 253656023017 is 710320656352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242836070656 + 10819952361 = 492784^2 + 104019^2 .

It is a cyclic number.

It is not a de Polignac number, because 253656023017 - 2⁷ = 253656022889 is a prime.

It is not a weakly prime, because it can be changed into another prime (253656023077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126828011508 + 126828011509.

It is an arithmetic number, because the mean of its divisors is an integer number (126828011509).

Almost surely, 2^253656023017 is an apocalyptic number.

It is an amenable number.

253656023017 is a deficient number, since it is larger than the sum of its proper divisors (1).

253656023017 is an equidigital number, since it uses as much as digits as its factorization.

253656023017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 40.

Adding to 253656023017 its reverse (710320656352), we get a palindrome (963976679369).

The spelling of 253656023017 in words is "two hundred fifty-three billion, six hundred fifty-six million, twenty-three thousand, seventeen".