551086364161 has 4 divisors (see below), whose sum is σ = 551109524400. Its totient is φ = 551063203924.

The previous prime is 551086364137. The next prime is 551086364243. The reversal of 551086364161 is 161463680155.

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 551086364161 - 2¹⁹ = 551085839873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551086364111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11544391 + ... + 11592028.

It is an arithmetic number, because the mean of its divisors is an integer number (137777381100).

Almost surely, 2^551086364161 is an apocalyptic number.

It is an amenable number.

551086364161 is a deficient number, since it is larger than the sum of its proper divisors (23160239).

551086364161 is a wasteful number, since it uses less digits than its factorization.

551086364161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23160238.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 551086364161 in words is "five hundred fifty-one billion, eighty-six million, three hundred sixty-four thousand, one hundred sixty-one".