1355613513123 has 32 divisors (see below), whose sum is σ = 1838997561600. Its totient is φ = 888122188800.

The previous prime is 1355613513113. The next prime is 1355613513151. The reversal of 1355613513123 is 3213153165531.

It is not a de Polignac number, because 1355613513123 - 2⁹ = 1355613512611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1355613513113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41616763 + ... + 41649323.

It is an arithmetic number, because the mean of its divisors is an integer number (57468673800).

Almost surely, 2^{1355613513123} is an apocalyptic number.

1355613513123 is a deficient number, since it is larger than the sum of its proper divisors (483384048477).

1355613513123 is a wasteful number, since it uses less digits than its factorization.

1355613513123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33603.

The product of its digits is 121500, while the sum is 39.

Adding to 1355613513123 its reverse (3213153165531), we get a palindrome (4568766678654).

The spelling of 1355613513123 in words is "one trillion, three hundred fifty-five billion, six hundred thirteen million, five hundred thirteen thousand, one hundred twenty-three".