1233667958881 has 2 divisors, whose sum is σ = 1233667958882. Its totient is φ = 1233667958880.

The previous prime is 1233667958819. The next prime is 1233667958893. The reversal of 1233667958881 is 1888597663321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1053199325025 + 180468633856 = 1026255^2 + 424816^2 .

It is an emirp because it is prime and its reverse (1888597663321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1233667958881 is a prime.

It is a super-2 number, since 2×1233667958881² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1233667958381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616833979440 + 616833979441.

It is an arithmetic number, because the mean of its divisors is an integer number (616833979441).

Almost surely, 2^{1233667958881} is an apocalyptic number.

It is an amenable number.

1233667958881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233667958881 is an equidigital number, since it uses as much as digits as its factorization.

1233667958881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104509440, while the sum is 67.

The spelling of 1233667958881 in words is "one trillion, two hundred thirty-three billion, six hundred sixty-seven million, nine hundred fifty-eight thousand, eight hundred eighty-one".