154136523260513 has 2 divisors, whose sum is σ = 154136523260514. Its totient is φ = 154136523260512.

The previous prime is 154136523260399. The next prime is 154136523260549. The reversal of 154136523260513 is 315062325631451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139721076014689 + 14415447245824 = 11820367^2 + 3796768^2 .

It is a cyclic number.

It is not a de Polignac number, because 154136523260513 - 2²² = 154136519066209 is a prime.

It is not a weakly prime, because it can be changed into another prime (154136523260563) 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, 77068261630256 + 77068261630257.

It is an arithmetic number, because the mean of its divisors is an integer number (77068261630257).

Almost surely, 2^{154136523260513} is an apocalyptic number.

It is an amenable number.

154136523260513 is a deficient number, since it is larger than the sum of its proper divisors (1).

154136523260513 is an equidigital number, since it uses as much as digits as its factorization.

154136523260513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944000, while the sum is 47.

Adding to 154136523260513 its reverse (315062325631451), we get a palindrome (469198848891964).

The spelling of 154136523260513 in words is "one hundred fifty-four trillion, one hundred thirty-six billion, five hundred twenty-three million, two hundred sixty thousand, five hundred thirteen".