1535123161513 has 2 divisors, whose sum is σ = 1535123161514. Its totient is φ = 1535123161512.

The previous prime is 1535123161501. The next prime is 1535123161519. The reversal of 1535123161513 is 3151613215351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 819046720144 + 716076441369 = 905012^2 + 846213^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1535123161513 is a prime.

It is not a weakly prime, because it can be changed into another prime (1535123161519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767561580756 + 767561580757.

It is an arithmetic number, because the mean of its divisors is an integer number (767561580757).

Almost surely, 2^{1535123161513} is an apocalyptic number.

It is an amenable number.

1535123161513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1535123161513 is an equidigital number, since it uses as much as digits as its factorization.

1535123161513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40500, while the sum is 37.

Adding to 1535123161513 its reverse (3151613215351), we get a palindrome (4686736376864).

The spelling of 1535123161513 in words is "one trillion, five hundred thirty-five billion, one hundred twenty-three million, one hundred sixty-one thousand, five hundred thirteen".