1345251223429 has 2 divisors, whose sum is σ = 1345251223430. Its totient is φ = 1345251223428.

The previous prime is 1345251223427. The next prime is 1345251223483. The reversal of 1345251223429 is 9243221525431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1030448312100 + 314802911329 = 1015110^2 + 561073^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345251223429 - 2¹ = 1345251223427 is a prime.

Together with 1345251223427, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345251223427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672625611714 + 672625611715.

It is an arithmetic number, because the mean of its divisors is an integer number (672625611715).

Almost surely, 2^{1345251223429} is an apocalyptic number.

It is an amenable number.

1345251223429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345251223429 is an equidigital number, since it uses as much as digits as its factorization.

1345251223429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 43.

The spelling of 1345251223429 in words is "one trillion, three hundred forty-five billion, two hundred fifty-one million, two hundred twenty-three thousand, four hundred twenty-nine".