1214551154389 has 2 divisors, whose sum is σ = 1214551154390. Its totient is φ = 1214551154388.

The previous prime is 1214551154387. The next prime is 1214551154429. The reversal of 1214551154389 is 9834511554121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1129082631889 + 85468522500 = 1062583^2 + 292350^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214551154389 - 2¹ = 1214551154387 is a prime.

Together with 1214551154387, 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 (1214551154387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607275577194 + 607275577195.

It is an arithmetic number, because the mean of its divisors is an integer number (607275577195).

Almost surely, 2^{1214551154389} is an apocalyptic number.

It is an amenable number.

1214551154389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214551154389 is an equidigital number, since it uses as much as digits as its factorization.

1214551154389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864000, while the sum is 49.

The spelling of 1214551154389 in words is "one trillion, two hundred fourteen billion, five hundred fifty-one million, one hundred fifty-four thousand, three hundred eighty-nine".