517346020406 has 4 divisors (see below), whose sum is σ = 776019030612. Its totient is φ = 258673010202.

The previous prime is 517346020381. The next prime is 517346020409. The reversal of 517346020406 is 604020643715.

It is a happy number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 517346020406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517346020409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129336505100 + ... + 129336505103.

It is an arithmetic number, because the mean of its divisors is an integer number (194004757653).

Almost surely, 2^517346020406 is an apocalyptic number.

517346020406 is a deficient number, since it is larger than the sum of its proper divisors (258673010206).

517346020406 is a wasteful number, since it uses less digits than its factorization.

517346020406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258673010205.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 517346020406 in words is "five hundred seventeen billion, three hundred forty-six million, twenty thousand, four hundred six".