513493956361 has 8 divisors (see below), whose sum is σ = 513954943424. Its totient is φ = 513033166800.

The previous prime is 513493956307. The next prime is 513493956383. The reversal of 513493956361 is 163659394315.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 513493956361 - 2²³ = 513485567753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513493956061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5421511 + ... + 5515411.

It is an arithmetic number, because the mean of its divisors is an integer number (64244367928).

Almost surely, 2^513493956361 is an apocalyptic number.

513493956361 is the 413721-st hex number.

It is an amenable number.

513493956361 is a deficient number, since it is larger than the sum of its proper divisors (460987063).

513493956361 is a wasteful number, since it uses less digits than its factorization.

513493956361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98751.

The product of its digits is 7873200, while the sum is 55.

The spelling of 513493956361 in words is "five hundred thirteen billion, four hundred ninety-three million, nine hundred fifty-six thousand, three hundred sixty-one".