12699000027 has 24 divisors (see below), whose sum is σ = 20966980320. Its totient is φ = 7255342080.

The previous prime is 12699000023. The next prime is 12699000059. The reversal of 12699000027 is 72000099621.

It is not a de Polignac number, because 12699000027 - 2² = 12699000023 is a prime.

It is a super-2 number, since 2×12699000027² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12698999955 and 12699000000.

It is not an unprimeable number, because it can be changed into a prime (12699000023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 464827 + ... + 491387.

It is an arithmetic number, because the mean of its divisors is an integer number (873624180).

Almost surely, 2^12699000027 is an apocalyptic number.

12699000027 is a deficient number, since it is larger than the sum of its proper divisors (8267980293).

12699000027 is a wasteful number, since it uses less digits than its factorization.

12699000027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34163 (or 34160 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

Adding to 12699000027 its reverse (72000099621), we get a palindrome (84699099648).

The spelling of 12699000027 in words is "twelve billion, six hundred ninety-nine million, twenty-seven", and thus it is an aban number.