517951787111 has 16 divisors (see below), whose sum is σ = 598301989920. Its totient is φ = 443147950080.

The previous prime is 517951787063. The next prime is 517951787117. The reversal of 517951787111 is 111787159715.

It is not a de Polignac number, because 517951787111 - 2³⁰ = 516878045287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517951787117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5691455 + ... + 5781743.

It is an arithmetic number, because the mean of its divisors is an integer number (37393874370).

Almost surely, 2^517951787111 is an apocalyptic number.

517951787111 is a deficient number, since it is larger than the sum of its proper divisors (80350202809).

517951787111 is a wasteful number, since it uses less digits than its factorization.

517951787111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120994.

The product of its digits is 617400, while the sum is 53.

The spelling of 517951787111 in words is "five hundred seventeen billion, nine hundred fifty-one million, seven hundred eighty-seven thousand, one hundred eleven".