123581880011 has 2 divisors, whose sum is σ = 123581880012. Its totient is φ = 123581880010.

The previous prime is 123581879969. The next prime is 123581880043. The reversal of 123581880011 is 110088185321.

It is a strong prime.

It is an emirp because it is prime and its reverse (110088185321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123581880011 is a prime.

It is not a weakly prime, because it can be changed into another prime (123581880211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61790940005 + 61790940006.

It is an arithmetic number, because the mean of its divisors is an integer number (61790940006).

Almost surely, 2^123581880011 is an apocalyptic number.

123581880011 is a deficient number, since it is larger than the sum of its proper divisors (1).

123581880011 is an equidigital number, since it uses as much as digits as its factorization.

123581880011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 38.

The spelling of 123581880011 in words is "one hundred twenty-three billion, five hundred eighty-one million, eight hundred eighty thousand, eleven".