123368521454 has 4 divisors (see below), whose sum is σ = 185052782184. Its totient is φ = 61684260726.

The previous prime is 123368521453. The next prime is 123368521483. The reversal of 123368521454 is 454125863321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454125863321 = 13 ⋅34932758717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123368521453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30842130362 + ... + 30842130365.

It is an arithmetic number, because the mean of its divisors is an integer number (46263195546).

Almost surely, 2^123368521454 is an apocalyptic number.

123368521454 is a deficient number, since it is larger than the sum of its proper divisors (61684260730).

123368521454 is an equidigital number, since it uses as much as digits as its factorization.

123368521454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61684260729.

The product of its digits is 691200, while the sum is 44.

The spelling of 123368521454 in words is "one hundred twenty-three billion, three hundred sixty-eight million, five hundred twenty-one thousand, four hundred fifty-four".