1123881863959 has 2 divisors, whose sum is σ = 1123881863960. Its totient is φ = 1123881863958.

The previous prime is 1123881863891. The next prime is 1123881864013. The reversal of 1123881863959 is 9593681883211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123881863959 is a prime.

It is a super-2 number, since 2×1123881863959² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123881863959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123881863659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561940931979 + 561940931980.

It is an arithmetic number, because the mean of its divisors is an integer number (561940931980).

Almost surely, 2^{1123881863959} is an apocalyptic number.

1123881863959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123881863959 is an equidigital number, since it uses as much as digits as its factorization.

1123881863959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22394880, while the sum is 64.

The spelling of 1123881863959 in words is "one trillion, one hundred twenty-three billion, eight hundred eighty-one million, eight hundred sixty-three thousand, nine hundred fifty-nine".