12351655009 has 2 divisors, whose sum is σ = 12351655010. Its totient is φ = 12351655008.

The previous prime is 12351655007. The next prime is 12351655051. The reversal of 12351655009 is 90055615321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11614803984 + 736851025 = 107772^2 + 27145^2 .

It is a cyclic number.

It is not a de Polignac number, because 12351655009 - 2¹ = 12351655007 is a prime.

It is a super-2 number, since 2×12351655009² (a number of 21 digits) contains 22 as substring.

Together with 12351655007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12351655003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6175827504 + 6175827505.

It is an arithmetic number, because the mean of its divisors is an integer number (6175827505).

Almost surely, 2^12351655009 is an apocalyptic number.

It is an amenable number.

12351655009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12351655009 is an equidigital number, since it uses as much as digits as its factorization.

12351655009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40500, while the sum is 37.

The spelling of 12351655009 in words is "twelve billion, three hundred fifty-one million, six hundred fifty-five thousand, nine".