123123320974747 has 2 divisors, whose sum is σ = 123123320974748. Its totient is φ = 123123320974746.

The previous prime is 123123320974711. The next prime is 123123320974763. The reversal of 123123320974747 is 747479023321321.

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-123123320974747 is a prime.

It is not a weakly prime, because it can be changed into another prime (123123321974747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61561660487373 + 61561660487374.

It is an arithmetic number, because the mean of its divisors is an integer number (61561660487374).

Almost surely, 2^{123123320974747} is an apocalyptic number.

123123320974747 is a deficient number, since it is larger than the sum of its proper divisors (1).

123123320974747 is an equidigital number, since it uses as much as digits as its factorization.

123123320974747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10668672, while the sum is 55.

The spelling of 123123320974747 in words is "one hundred twenty-three trillion, one hundred twenty-three billion, three hundred twenty million, nine hundred seventy-four thousand, seven hundred forty-seven".