56554843161 has 4 divisors (see below), whose sum is σ = 75406457552. Its totient is φ = 37703228772.

The previous prime is 56554843123. The next prime is 56554843171. The reversal of 56554843161 is 16134845565.

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 not a de Polignac number, because 56554843161 - 2¹⁴ = 56554826777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56554843161.

It is not an unprimeable number, because it can be changed into a prime (56554843171) 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, 9425807191 + ... + 9425807196.

It is an arithmetic number, because the mean of its divisors is an integer number (18851614388).

Almost surely, 2^56554843161 is an apocalyptic number.

It is an amenable number.

56554843161 is a deficient number, since it is larger than the sum of its proper divisors (18851614391).

56554843161 is a wasteful number, since it uses less digits than its factorization.

56554843161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18851614390.

The product of its digits is 1728000, while the sum is 48.

The spelling of 56554843161 in words is "fifty-six billion, five hundred fifty-four million, eight hundred forty-three thousand, one hundred sixty-one".