513425544209 has 16 divisors (see below), whose sum is σ = 535365891984. Its totient is φ = 491990630400.

The previous prime is 513425544193. The next prime is 513425544221. The reversal of 513425544209 is 902445524315.

It can be written as a sum of positive squares in 8 ways, for example, as 2633742400 + 510791801809 = 51320^2 + 714697^2 .

It is a cyclic number.

It is not a de Polignac number, because 513425544209 - 2⁴ = 513425544193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513425544209.

It is not an unprimeable number, because it can be changed into a prime (513425544809) 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, 365417 + ... + 1077209.

It is an arithmetic number, because the mean of its divisors is an integer number (33460368249).

Almost surely, 2^513425544209 is an apocalyptic number.

It is an amenable number.

513425544209 is a deficient number, since it is larger than the sum of its proper divisors (21940347775).

513425544209 is a wasteful number, since it uses less digits than its factorization.

513425544209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712148.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 513425544209 in words is "five hundred thirteen billion, four hundred twenty-five million, five hundred forty-four thousand, two hundred nine".