123458315478345 has 24 divisors (see below), whose sum is σ = 213997835021256. Its totient is φ = 65843382144768.

The previous prime is 123458315478331. The next prime is 123458315478367. The reversal of 123458315478345 is 543874513854321.

123458315478345 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 5 + 8 + 3 + 1 + 547 + 83 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 29467830551184 + 93990484927161 = 5428428^2 + 9694869^2 .

It is not a de Polignac number, because 123458315478345 - 2⁵ = 123458315478313 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 19083054 + ... + 24720023.

It is an arithmetic number, because the mean of its divisors is an integer number (8916576459219).

Almost surely, 2^{123458315478345} is an apocalyptic number.

123458315478345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123458315478345 is a deficient number, since it is larger than the sum of its proper divisors (90539519542911).

123458315478345 is a wasteful number, since it uses less digits than its factorization.

123458315478345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43865721 (or 43865718 counting only the distinct ones).

The product of its digits is 193536000, while the sum is 63.

The spelling of 123458315478345 in words is "one hundred twenty-three trillion, four hundred fifty-eight billion, three hundred fifteen million, four hundred seventy-eight thousand, three hundred forty-five".