12154440629 has 2 divisors, whose sum is σ = 12154440630. Its totient is φ = 12154440628.

The previous prime is 12154440577. The next prime is 12154440631. The reversal of 12154440629 is 92604445121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6087588529 + 6066852100 = 78023^2 + 77890^2 .

It is a cyclic number.

It is not a de Polignac number, because 12154440629 - 2³² = 7859473333 is a prime.

Together with 12154440631, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12154440592 and 12154440601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12154440679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6077220314 + 6077220315.

It is an arithmetic number, because the mean of its divisors is an integer number (6077220315).

Almost surely, 2^12154440629 is an apocalyptic number.

It is an amenable number.

12154440629 is a deficient number, since it is larger than the sum of its proper divisors (1).

12154440629 is an equidigital number, since it uses as much as digits as its factorization.

12154440629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 12154440629 in words is "twelve billion, one hundred fifty-four million, four hundred forty thousand, six hundred twenty-nine".