513194675021 has 16 divisors (see below), whose sum is σ = 591776236800. Its totient is φ = 435940851840.

The previous prime is 513194675017. The next prime is 513194675053. The reversal of 513194675021 is 120576491315.

It is a cyclic number.

It is not a de Polignac number, because 513194675021 - 2² = 513194675017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513194675321) 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 15 ways as a sum of consecutive naturals, for example, 127751 + ... + 1021131.

It is an arithmetic number, because the mean of its divisors is an integer number (36986014800).

Almost surely, 2^513194675021 is an apocalyptic number.

It is an amenable number.

513194675021 is a deficient number, since it is larger than the sum of its proper divisors (78581561779).

513194675021 is a wasteful number, since it uses less digits than its factorization.

513194675021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894124.

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 513194675021 in words is "five hundred thirteen billion, one hundred ninety-four million, six hundred seventy-five thousand, twenty-one".