253711818233 has 2 divisors, whose sum is σ = 253711818234. Its totient is φ = 253711818232.

The previous prime is 253711818221. The next prime is 253711818313. The reversal of 253711818233 is 332818117352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148292767744 + 105419050489 = 385088^2 + 324683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253711818233 is a prime.

It is a super-2 number, since 2×253711818233² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (253711818133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126855909116 + 126855909117.

It is an arithmetic number, because the mean of its divisors is an integer number (126855909117).

Almost surely, 2^253711818233 is an apocalyptic number.

It is an amenable number.

253711818233 is a deficient number, since it is larger than the sum of its proper divisors (1).

253711818233 is an equidigital number, since it uses as much as digits as its factorization.

253711818233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 44.

The spelling of 253711818233 in words is "two hundred fifty-three billion, seven hundred eleven million, eight hundred eighteen thousand, two hundred thirty-three".