12154347551 has 2 divisors, whose sum is σ = 12154347552. Its totient is φ = 12154347550.

The previous prime is 12154347521. The next prime is 12154347553. The reversal of 12154347551 is 15574345121.

It is a strong prime.

It is an emirp because it is prime and its reverse (15574345121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12154347551 - 2²⁶ = 12087238687 is a prime.

Together with 12154347553, 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 (12154347553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6077173775 + 6077173776.

It is an arithmetic number, because the mean of its divisors is an integer number (6077173776).

Almost surely, 2^12154347551 is an apocalyptic number.

12154347551 is a deficient number, since it is larger than the sum of its proper divisors (1).

12154347551 is an equidigital number, since it uses as much as digits as its factorization.

12154347551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84000, while the sum is 38.

The spelling of 12154347551 in words is "twelve billion, one hundred fifty-four million, three hundred forty-seven thousand, five hundred fifty-one".