513445406693 has 16 divisors (see below), whose sum is σ = 527593430016. Its totient is φ = 499520017920.

The previous prime is 513445406689. The next prime is 513445406707. The reversal of 513445406693 is 396604544315.

It is a cyclic number.

It is not a de Polignac number, because 513445406693 - 2² = 513445406689 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 (513445406603) 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, 2006780 + ... + 2248122.

It is an arithmetic number, because the mean of its divisors is an integer number (32974589376).

Almost surely, 2^513445406693 is an apocalyptic number.

It is an amenable number.

513445406693 is a deficient number, since it is larger than the sum of its proper divisors (14148023323).

513445406693 is a wasteful number, since it uses less digits than its factorization.

513445406693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241804.

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 513445406693 in words is "five hundred thirteen billion, four hundred forty-five million, four hundred six thousand, six hundred ninety-three".