123051728959 has 2 divisors, whose sum is σ = 123051728960. Its totient is φ = 123051728958.

The previous prime is 123051728951. The next prime is 123051729041. The reversal of 123051728959 is 959827150321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123051728959 - 2³ = 123051728951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123051728951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61525864479 + 61525864480.

It is an arithmetic number, because the mean of its divisors is an integer number (61525864480).

Almost surely, 2^123051728959 is an apocalyptic number.

123051728959 is a deficient number, since it is larger than the sum of its proper divisors (1).

123051728959 is an equidigital number, since it uses as much as digits as its factorization.

123051728959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 52.

The spelling of 123051728959 in words is "one hundred twenty-three billion, fifty-one million, seven hundred twenty-eight thousand, nine hundred fifty-nine".