12551216927 has 2 divisors, whose sum is σ = 12551216928. Its totient is φ = 12551216926.

The previous prime is 12551216903. The next prime is 12551216929. The reversal of 12551216927 is 72961215521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12551216927 - 2¹⁰ = 12551215903 is a prime.

It is a super-2 number, since 2×12551216927² (a number of 21 digits) contains 22 as substring.

Together with 12551216929, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12551216929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6275608463 + 6275608464.

It is an arithmetic number, because the mean of its divisors is an integer number (6275608464).

Almost surely, 2^12551216927 is an apocalyptic number.

12551216927 is a deficient number, since it is larger than the sum of its proper divisors (1).

12551216927 is an equidigital number, since it uses as much as digits as its factorization.

12551216927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 41.

The spelling of 12551216927 in words is "twelve billion, five hundred fifty-one million, two hundred sixteen thousand, nine hundred twenty-seven".