513121320041 has 16 divisors (see below), whose sum is σ = 561651679680. Its totient is φ = 464905889280.

The previous prime is 513121320017. The next prime is 513121320079. The reversal of 513121320041 is 140023121315.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513121320041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 513121319989 and 513121320016.

It is not an unprimeable number, because it can be changed into a prime (513121320011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9830885 + ... + 9882941.

It is an arithmetic number, because the mean of its divisors is an integer number (35103229980).

Almost surely, 2^513121320041 is an apocalyptic number.

It is an amenable number.

513121320041 is a deficient number, since it is larger than the sum of its proper divisors (48530359639).

513121320041 is a wasteful number, since it uses less digits than its factorization.

513121320041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55064.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 513121320041 its reverse (140023121315), we get a palindrome (653144441356).

The spelling of 513121320041 in words is "five hundred thirteen billion, one hundred twenty-one million, three hundred twenty thousand, forty-one".