154437743386513 has 2 divisors, whose sum is σ = 154437743386514. Its totient is φ = 154437743386512.

The previous prime is 154437743386411. The next prime is 154437743386639. The reversal of 154437743386513 is 315683347734451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121028337658944 + 33409405727569 = 11001288^2 + 5780087^2 .

It is an emirp because it is prime and its reverse (315683347734451) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154437743386513 is a prime.

It is not a weakly prime, because it can be changed into another prime (154437743386013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77218871693256 + 77218871693257.

It is an arithmetic number, because the mean of its divisors is an integer number (77218871693257).

Almost surely, 2^{154437743386513} is an apocalyptic number.

It is an amenable number.

154437743386513 is a deficient number, since it is larger than the sum of its proper divisors (1).

154437743386513 is an equidigital number, since it uses as much as digits as its factorization.

154437743386513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 304819200, while the sum is 64.

The spelling of 154437743386513 in words is "one hundred fifty-four trillion, four hundred thirty-seven billion, seven hundred forty-three million, three hundred eighty-six thousand, five hundred thirteen".