123345510254443 has 2 divisors, whose sum is σ = 123345510254444. Its totient is φ = 123345510254442.

The previous prime is 123345510254441. The next prime is 123345510254467. The reversal of 123345510254443 is 344452015543321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123345510254443 - 2¹ = 123345510254441 is a prime.

It is a super-2 number, since 2×123345510254443² (a number of 29 digits) contains 22 as substring.

Together with 123345510254441, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 123345510254393 and 123345510254402.

It is not a weakly prime, because it can be changed into another prime (123345510254441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61672755127221 + 61672755127222.

It is an arithmetic number, because the mean of its divisors is an integer number (61672755127222).

Almost surely, 2^{123345510254443} is an apocalyptic number.

123345510254443 is a deficient number, since it is larger than the sum of its proper divisors (1).

123345510254443 is an equidigital number, since it uses as much as digits as its factorization.

123345510254443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456000, while the sum is 46.

Adding to 123345510254443 its reverse (344452015543321), we get a palindrome (467797525797764).

The spelling of 123345510254443 in words is "one hundred twenty-three trillion, three hundred forty-five billion, five hundred ten million, two hundred fifty-four thousand, four hundred forty-three".