513840497354 has 4 divisors (see below), whose sum is σ = 770760746034. Its totient is φ = 256920248676.

The previous prime is 513840497329. The next prime is 513840497381. The reversal of 513840497354 is 453794048315.

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

It can be written as a sum of positive squares in only one way, i.e., 477957909025 + 35882588329 = 691345^2 + 189427^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 513840497296 and 513840497305.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128460124337 + ... + 128460124340.

Almost surely, 2^513840497354 is an apocalyptic number.

513840497354 is a deficient number, since it is larger than the sum of its proper divisors (256920248680).

513840497354 is a wasteful number, since it uses less digits than its factorization.

513840497354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256920248679.

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 513840497354 in words is "five hundred thirteen billion, eight hundred forty million, four hundred ninety-seven thousand, three hundred fifty-four".