12623631109 has 2 divisors, whose sum is σ = 12623631110. Its totient is φ = 12623631108.

The previous prime is 12623631089. The next prime is 12623631143. The reversal of 12623631109 is 90113632621.

It is an a-pointer prime, because the next prime (12623631143) can be obtained adding 12623631109 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12595572900 + 28058209 = 112230^2 + 5297^2 .

It is a cyclic number.

It is not a de Polignac number, because 12623631109 - 2²⁵ = 12590076677 is a prime.

It is a super-2 number, since 2×12623631109² (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 (12623631149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6311815554 + 6311815555.

It is an arithmetic number, because the mean of its divisors is an integer number (6311815555).

Almost surely, 2^12623631109 is an apocalyptic number.

It is an amenable number.

12623631109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12623631109 is an equidigital number, since it uses as much as digits as its factorization.

12623631109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 12623631109 in words is "twelve billion, six hundred twenty-three million, six hundred thirty-one thousand, one hundred nine".