123013948891 has 2 divisors, whose sum is σ = 123013948892. Its totient is φ = 123013948890.

The previous prime is 123013948879. The next prime is 123013948927. The reversal of 123013948891 is 198849310321.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (198849310321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123013948891 - 2¹⁷ = 123013817819 is a prime.

It is not a weakly prime, because it can be changed into another prime (123013948691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61506974445 + 61506974446.

It is an arithmetic number, because the mean of its divisors is an integer number (61506974446).

Almost surely, 2^123013948891 is an apocalyptic number.

123013948891 is a deficient number, since it is larger than the sum of its proper divisors (1).

123013948891 is an equidigital number, since it uses as much as digits as its factorization.

123013948891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 49.

The spelling of 123013948891 in words is "one hundred twenty-three billion, thirteen million, nine hundred forty-eight thousand, eight hundred ninety-one".