123451418223139 has 2 divisors, whose sum is σ = 123451418223140. Its totient is φ = 123451418223138.

The previous prime is 123451418223103. The next prime is 123451418223151. The reversal of 123451418223139 is 931322814154321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123451418223139 - 2¹¹ = 123451418221091 is a prime.

It is a super-2 number, since 2×123451418223139² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123451418223092 and 123451418223101.

It is not a weakly prime, because it can be changed into another prime (123451418233139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61725709111569 + 61725709111570.

It is an arithmetic number, because the mean of its divisors is an integer number (61725709111570).

Almost surely, 2^{123451418223139} is an apocalyptic number.

123451418223139 is a deficient number, since it is larger than the sum of its proper divisors (1).

123451418223139 is an equidigital number, since it uses as much as digits as its factorization.

123451418223139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 49.

The spelling of 123451418223139 in words is "one hundred twenty-three trillion, four hundred fifty-one billion, four hundred eighteen million, two hundred twenty-three thousand, one hundred thirty-nine".