513645964222 has 4 divisors (see below), whose sum is σ = 770468946336. Its totient is φ = 256822982110.

The previous prime is 513645964207. The next prime is 513645964277. The reversal of 513645964222 is 222469546315.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128411491054 + ... + 128411491057.

It is an arithmetic number, because the mean of its divisors is an integer number (192617236584).

Almost surely, 2^513645964222 is an apocalyptic number.

513645964222 is a deficient number, since it is larger than the sum of its proper divisors (256822982114).

513645964222 is a wasteful number, since it uses less digits than its factorization.

513645964222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256822982113.

The product of its digits is 3110400, while the sum is 49.

The spelling of 513645964222 in words is "five hundred thirteen billion, six hundred forty-five million, nine hundred sixty-four thousand, two hundred twenty-two".