12629451745 has 4 divisors (see below), whose sum is σ = 15155342100. Its totient is φ = 10103561392.

The previous prime is 12629451719. The next prime is 12629451803. The reversal of 12629451745 is 54715492621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54715492621 = 31 ⋅1765015891.

It can be written as a sum of positive squares in 2 ways, for example, as 7756853329 + 4872598416 = 88073^2 + 69804^2 .

It is a cyclic number.

It is not a de Polignac number, because 12629451745 - 2⁷ = 12629451617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12629451695 and 12629451704.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262945170 + ... + 1262945179.

It is an arithmetic number, because the mean of its divisors is an integer number (3788835525).

Almost surely, 2^12629451745 is an apocalyptic number.

It is an amenable number.

12629451745 is a deficient number, since it is larger than the sum of its proper divisors (2525890355).

12629451745 is an equidigital number, since it uses as much as digits as its factorization.

12629451745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525890354.

The product of its digits is 604800, while the sum is 46.

The spelling of 12629451745 in words is "twelve billion, six hundred twenty-nine million, four hundred fifty-one thousand, seven hundred forty-five".