12634091899 has 16 divisors (see below), whose sum is σ = 14974221024. Its totient is φ = 10508198400.

The previous prime is 12634091863. The next prime is 12634091917. The reversal of 12634091899 is 99819043621.

It is a cyclic number.

It is not a de Polignac number, because 12634091899 - 2¹⁷ = 12633960827 is a prime.

It is a super-3 number, since 3×12634091899³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12634091809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374772 + ... + 407089.

It is an arithmetic number, because the mean of its divisors is an integer number (935888814).

Almost surely, 2^12634091899 is an apocalyptic number.

12634091899 is a deficient number, since it is larger than the sum of its proper divisors (2340129125).

12634091899 is a wasteful number, since it uses less digits than its factorization.

12634091899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781998.

The product of its (nonzero) digits is 839808, while the sum is 52.

The spelling of 12634091899 in words is "twelve billion, six hundred thirty-four million, ninety-one thousand, eight hundred ninety-nine".