513205133651 has 8 divisors (see below), whose sum is σ = 586526983680. Its totient is φ = 439884991368.

The previous prime is 513205133611. The next prime is 513205133653. The reversal of 513205133651 is 156331502315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 513205133651 - 2⁶ = 513205133587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513205133653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299420 + ... + 1056438.

It is an arithmetic number, because the mean of its divisors is an integer number (73315872960).

Almost surely, 2^513205133651 is an apocalyptic number.

513205133651 is a deficient number, since it is larger than the sum of its proper divisors (73321850029).

513205133651 is an equidigital number, since it uses as much as digits as its factorization.

513205133651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853873.

The product of its (nonzero) digits is 40500, while the sum is 35.

Adding to 513205133651 its reverse (156331502315), we get a palindrome (669536635966).

The spelling of 513205133651 in words is "five hundred thirteen billion, two hundred five million, one hundred thirty-three thousand, six hundred fifty-one".