55316365666161 has 4 divisors (see below), whose sum is σ = 73755154221552. Its totient is φ = 36877577110772.

The previous prime is 55316365666129. The next prime is 55316365666171. The reversal of 55316365666161 is 16166656361355.

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 55316365666161 - 2⁵ = 55316365666129 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55316365666095 and 55316365666104.

It is not an unprimeable number, because it can be changed into a prime (55316365666171) 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, 9219394277691 + ... + 9219394277696.

It is an arithmetic number, because the mean of its divisors is an integer number (18438788555388).

Almost surely, 2^{55316365666161} is an apocalyptic number.

It is an amenable number.

55316365666161 is a deficient number, since it is larger than the sum of its proper divisors (18438788555391).

55316365666161 is a wasteful number, since it uses less digits than its factorization.

55316365666161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18438788555390.

The product of its digits is 52488000, while the sum is 60.

The spelling of 55316365666161 in words is "fifty-five trillion, three hundred sixteen billion, three hundred sixty-five million, six hundred sixty-six thousand, one hundred sixty-one".