123974968499 has 2 divisors, whose sum is σ = 123974968500. Its totient is φ = 123974968498.

The previous prime is 123974968487. The next prime is 123974968531. The reversal of 123974968499 is 994869479321.

It is a weak prime.

It is an emirp because it is prime and its reverse (994869479321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123974968499 is a prime.

It is not a weakly prime, because it can be changed into another prime (123974968459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61987484249 + 61987484250.

It is an arithmetic number, because the mean of its divisors is an integer number (61987484250).

Almost surely, 2^123974968499 is an apocalyptic number.

123974968499 is a deficient number, since it is larger than the sum of its proper divisors (1).

123974968499 is an equidigital number, since it uses as much as digits as its factorization.

123974968499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211631616, while the sum is 71.

The spelling of 123974968499 in words is "one hundred twenty-three billion, nine hundred seventy-four million, nine hundred sixty-eight thousand, four hundred ninety-nine".