12551216903 has 2 divisors, whose sum is σ = 12551216904. Its totient is φ = 12551216902.

The previous prime is 12551216893. The next prime is 12551216927. The reversal of 12551216903 is 30961215521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12551216903 - 2¹⁰ = 12551215879 is a prime.

It is a super-2 number, since 2×12551216903² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12551213903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6275608451 + 6275608452.

It is an arithmetic number, because the mean of its divisors is an integer number (6275608452).

Almost surely, 2^12551216903 is an apocalyptic number.

12551216903 is a deficient number, since it is larger than the sum of its proper divisors (1).

12551216903 is an equidigital number, since it uses as much as digits as its factorization.

12551216903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 35.

The spelling of 12551216903 in words is "twelve billion, five hundred fifty-one million, two hundred sixteen thousand, nine hundred three".