1535123161543 has 2 divisors, whose sum is σ = 1535123161544. Its totient is φ = 1535123161542.

The previous prime is 1535123161519. The next prime is 1535123161567. The reversal of 1535123161543 is 3451613215351.

It is a balanced prime because it is at equal distance from previous prime (1535123161519) and next prime (1535123161567).

It is a cyclic number.

It is not a de Polignac number, because 1535123161543 - 2³⁷ = 1397684208071 is a prime.

It is a super-2 number, since 2×1535123161543² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1535123161496 and 1535123161505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1535123161513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767561580771 + 767561580772.

It is an arithmetic number, because the mean of its divisors is an integer number (767561580772).

Almost surely, 2^{1535123161543} is an apocalyptic number.

1535123161543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1535123161543 is an equidigital number, since it uses as much as digits as its factorization.

1535123161543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 40.

Adding to 1535123161543 its reverse (3451613215351), we get a palindrome (4986736376894).

The spelling of 1535123161543 in words is "one trillion, five hundred thirty-five billion, one hundred twenty-three million, one hundred sixty-one thousand, five hundred forty-three".