12638693011 has 16 divisors (see below), whose sum is σ = 15313849600. Its totient is φ = 10189149408.

The previous prime is 12638692987. The next prime is 12638693047. The reversal of 12638693011 is 11039683621.

12638693011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12638693011 - 2⁷ = 12638692883 is a prime.

It is a super-2 number, since 2×12638693011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12638693411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323340 + ... + 360313.

It is an arithmetic number, because the mean of its divisors is an integer number (957115600).

Almost surely, 2^12638693011 is an apocalyptic number.

12638693011 is a deficient number, since it is larger than the sum of its proper divisors (2675156589).

12638693011 is a wasteful number, since it uses less digits than its factorization.

12638693011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683818.

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 12638693011 in words is "twelve billion, six hundred thirty-eight million, six hundred ninety-three thousand, eleven".