513664265323 has 24 divisors (see below), whose sum is σ = 604730051856. Its totient is φ = 431205964800.

The previous prime is 513664265299. The next prime is 513664265339. The reversal of 513664265323 is 323562466315.

It is not a de Polignac number, because 513664265323 - 2¹³ = 513664257131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513664265353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36343 + ... + 1014223.

It is an arithmetic number, because the mean of its divisors is an integer number (25197085494).

Almost surely, 2^513664265323 is an apocalyptic number.

513664265323 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

513664265323 is a deficient number, since it is larger than the sum of its proper divisors (91065786533).

513664265323 is a wasteful number, since it uses less digits than its factorization.

513664265323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978015 (or 977962 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 46.

The spelling of 513664265323 in words is "five hundred thirteen billion, six hundred sixty-four million, two hundred sixty-five thousand, three hundred twenty-three".