12685041738 has 12 divisors (see below), whose sum is σ = 27484257138. Its totient is φ = 4228347240.

The previous prime is 12685041737. The next prime is 12685041767. The reversal of 12685041738 is 83714058621.

12685041738 is a `hidden beast` number, since 12 + 68 + 504 + 1 + 73 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11258695449 + 1426346289 = 106107^2 + 37767^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12685041693 and 12685041702.

It is not an unprimeable number, because it can be changed into a prime (12685041731) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 352362253 + ... + 352362288.

Almost surely, 2^12685041738 is an apocalyptic number.

12685041738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12685041738 is an abundant number, since it is smaller than the sum of its proper divisors (14799215400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12685041738 is a wasteful number, since it uses less digits than its factorization.

12685041738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704724549 (or 704724546 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 12685041738 in words is "twelve billion, six hundred eighty-five million, forty-one thousand, seven hundred thirty-eight".