513449634916 has 9 divisors (see below), whose sum is σ = 898539369049. Its totient is φ = 256724100904.

The previous prime is 513449634853. The next prime is 513449634931. The reversal of 513449634916 is 619436944315.

The square root of 513449634916 is 716554.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 284483556900 + 228966078016 = 533370^2 + 478504^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1253970 + ... + 1612246.

Almost surely, 2^513449634916 is an apocalyptic number.

513449634916 is the 716554-th square number.

It is an amenable number.

513449634916 is a deficient number, since it is larger than the sum of its proper divisors (385089734133).

513449634916 is an frugal number, since it uses more digits than its factorization.

513449634916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716558 (or 358279 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 55.

The spelling of 513449634916 in words is "five hundred thirteen billion, four hundred forty-nine million, six hundred thirty-four thousand, nine hundred sixteen".