517670995261 has 6 divisors (see below), whose sum is σ = 602188708830. Its totient is φ = 443717995896.

The previous prime is 517670995243. The next prime is 517670995307. The reversal of 517670995261 is 162599076715.

It can be written as a sum of positive squares in only one way, i.e., 508697032900 + 8973962361 = 713230^2 + 94731^2 .

It is not a de Polignac number, because 517670995261 - 2¹⁵ = 517670962493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 517670995196 and 517670995205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517670995241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5282357046 + ... + 5282357143.

It is an arithmetic number, because the mean of its divisors is an integer number (100364784805).

Almost surely, 2^517670995261 is an apocalyptic number.

It is an amenable number.

517670995261 is a deficient number, since it is larger than the sum of its proper divisors (84517713569).

517670995261 is a wasteful number, since it uses less digits than its factorization.

517670995261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10564714203 (or 10564714196 counting only the distinct ones).

The product of its (nonzero) digits is 7144200, while the sum is 58.

The spelling of 517670995261 in words is "five hundred seventeen billion, six hundred seventy million, nine hundred ninety-five thousand, two hundred sixty-one".