12455445123 has 18 divisors (see below), whose sum is σ = 19775451332. Its totient is φ = 7548753960.

The previous prime is 12455445113. The next prime is 12455445133. The reversal of 12455445123 is 32154455421.

12455445123 is a `hidden beast` number, since 1 + 2 + 45 + 544 + 51 + 23 = 666.

It is an interprime number because it is at equal distance from previous prime (12455445113) and next prime (12455445133).

It is not a de Polignac number, because 12455445123 - 2⁹ = 12455444611 is a prime.

It is a super-2 number, since 2×12455445123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12455445113) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5717665 + ... + 5719842.

Almost surely, 2^12455445123 is an apocalyptic number.

12455445123 is a deficient number, since it is larger than the sum of its proper divisors (7320006209).

12455445123 is a wasteful number, since it uses less digits than its factorization.

12455445123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11437535 (or 11437521 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The spelling of 12455445123 in words is "twelve billion, four hundred fifty-five million, four hundred forty-five thousand, one hundred twenty-three".