513326162123 has 4 divisors (see below), whose sum is σ = 515931878880. Its totient is φ = 510720445368.

The previous prime is 513326162117. The next prime is 513326162131. The reversal of 513326162123 is 321261623315.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 513326162123 - 2⁶ = 513326162059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513326162623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1302858083 + ... + 1302858476.

It is an arithmetic number, because the mean of its divisors is an integer number (128982969720).

Almost surely, 2^513326162123 is an apocalyptic number.

513326162123 is a deficient number, since it is larger than the sum of its proper divisors (2605716757).

513326162123 is a wasteful number, since it uses less digits than its factorization.

513326162123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605716756.

The product of its digits is 38880, while the sum is 35.

Adding to 513326162123 its reverse (321261623315), we get a palindrome (834587785438).

The spelling of 513326162123 in words is "five hundred thirteen billion, three hundred twenty-six million, one hundred sixty-two thousand, one hundred twenty-three".