517801122961 has 4 divisors (see below), whose sum is σ = 534504385024. Its totient is φ = 501097860900.

The previous prime is 517801122953. The next prime is 517801122991. The reversal of 517801122961 is 169221108715.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 517801122961 - 2³ = 517801122953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (517801122991) 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 3 ways as a sum of consecutive naturals, for example, 8351630985 + ... + 8351631046.

It is an arithmetic number, because the mean of its divisors is an integer number (133626096256).

Almost surely, 2^517801122961 is an apocalyptic number.

It is an amenable number.

517801122961 is a deficient number, since it is larger than the sum of its proper divisors (16703262063).

517801122961 is a wasteful number, since it uses less digits than its factorization.

517801122961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16703262062.

The product of its (nonzero) digits is 60480, while the sum is 43.

The spelling of 517801122961 in words is "five hundred seventeen billion, eight hundred one million, one hundred twenty-two thousand, nine hundred sixty-one".