263411581123 has 2 divisors, whose sum is σ = 263411581124. Its totient is φ = 263411581122.

The previous prime is 263411581117. The next prime is 263411581163. The reversal of 263411581123 is 321185114362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 263411581123 - 2⁵ = 263411581091 is a prime.

It is a super-2 number, since 2×263411581123² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (263411581163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131705790561 + 131705790562.

It is an arithmetic number, because the mean of its divisors is an integer number (131705790562).

Almost surely, 2^263411581123 is an apocalyptic number.

263411581123 is a deficient number, since it is larger than the sum of its proper divisors (1).

263411581123 is an equidigital number, since it uses as much as digits as its factorization.

263411581123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

Adding to 263411581123 its reverse (321185114362), we get a palindrome (584596695485).

The spelling of 263411581123 in words is "two hundred sixty-three billion, four hundred eleven million, five hundred eighty-one thousand, one hundred twenty-three".