12386634081 has 16 divisors (see below), whose sum is σ = 16874075520. Its totient is φ = 8079344000.

The previous prime is 12386634079. The next prime is 12386634131. The reversal of 12386634081 is 18043668321.

It is a cyclic number.

It is not a de Polignac number, because 12386634081 - 2¹ = 12386634079 is a prime.

It is a super-2 number, since 2×12386634081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12386634011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51420 + ... + 165581.

It is an arithmetic number, because the mean of its divisors is an integer number (1054629720).

Almost surely, 2^12386634081 is an apocalyptic number.

It is an amenable number.

12386634081 is a deficient number, since it is larger than the sum of its proper divisors (4487441439).

12386634081 is a wasteful number, since it uses less digits than its factorization.

12386634081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217416.

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 12386634081 in words is "twelve billion, three hundred eighty-six million, six hundred thirty-four thousand, eighty-one".