513789721379 has 64 divisors (see below), whose sum is σ = 622338038784. Its totient is φ = 418844160000.

The previous prime is 513789721373. The next prime is 513789721387. The reversal of 513789721379 is 973127987315.

It is a cyclic number.

It is not a de Polignac number, because 513789721379 - 2²⁸ = 513521285923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (513789721373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 58241789 + ... + 58250609.

It is an arithmetic number, because the mean of its divisors is an integer number (9724031856).

Almost surely, 2^513789721379 is an apocalyptic number.

513789721379 is a deficient number, since it is larger than the sum of its proper divisors (108548317405).

513789721379 is a wasteful number, since it uses less digits than its factorization.

513789721379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9068.

The product of its digits is 20003760, while the sum is 62.

The spelling of 513789721379 in words is "five hundred thirteen billion, seven hundred eighty-nine million, seven hundred twenty-one thousand, three hundred seventy-nine".