123454545679 has 2 divisors, whose sum is σ = 123454545680. Its totient is φ = 123454545678.

The previous prime is 123454545677. The next prime is 123454545757. The reversal of 123454545679 is 976545454321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123454545679 - 2¹ = 123454545677 is a prime.

Together with 123454545677, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123454545677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61727272839 + 61727272840.

It is an arithmetic number, because the mean of its divisors is an integer number (61727272840).

Almost surely, 2^123454545679 is an apocalyptic number.

123454545679 is a deficient number, since it is larger than the sum of its proper divisors (1).

123454545679 is an equidigital number, since it uses as much as digits as its factorization.

123454545679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144000, while the sum is 55.

The spelling of 123454545679 in words is "one hundred twenty-three billion, four hundred fifty-four million, five hundred forty-five thousand, six hundred seventy-nine".