12638208325077 has 12 divisors (see below), whose sum is σ = 18288933229164. Its totient is φ = 8409898327680.

The previous prime is 12638208325007. The next prime is 12638208325081. The reversal of 12638208325077 is 77052380283621.

12638208325077 is a `hidden beast` number, since 1 + 2 + 6 + 38 + 20 + 83 + 2 + 507 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1908351607761 + 10729856717316 = 1381431^2 + 3275646^2 .

It is not a de Polignac number, because 12638208325077 - 2²³ = 12638199936469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12638208325007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1297818948 + ... + 1297828685.

It is an arithmetic number, because the mean of its divisors is an integer number (1524077769097).

Almost surely, 2^{12638208325077} is an apocalyptic number.

It is an amenable number.

12638208325077 is a deficient number, since it is larger than the sum of its proper divisors (5650724904087).

12638208325077 is a wasteful number, since it uses less digits than its factorization.

12638208325077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595648180 (or 2595648177 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 12638208325077 in words is "twelve trillion, six hundred thirty-eight billion, two hundred eight million, three hundred twenty-five thousand, seventy-seven".