513366632461 has 4 divisors (see below), whose sum is σ = 513686090592. Its totient is φ = 513047174332.

The previous prime is 513366632447. The next prime is 513366632477. The reversal of 513366632461 is 164236663315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 513366632461 - 2¹⁵ = 513366599693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513366632431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159726655 + ... + 159729868.

It is an arithmetic number, because the mean of its divisors is an integer number (128421522648).

Almost surely, 2^513366632461 is an apocalyptic number.

It is an amenable number.

513366632461 is a deficient number, since it is larger than the sum of its proper divisors (319458131).

513366632461 is a wasteful number, since it uses less digits than its factorization.

513366632461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319458130.

The product of its digits is 1399680, while the sum is 46.

The spelling of 513366632461 in words is "five hundred thirteen billion, three hundred sixty-six million, six hundred thirty-two thousand, four hundred sixty-one".