55066655161 has 6 divisors (see below), whose sum is σ = 64057129530. Its totient is φ = 47199990096.

The previous prime is 55066655113. The next prime is 55066655179. The reversal of 55066655161 is 16155666055.

It can be written as a sum of positive squares in only one way, i.e., 53012299536 + 2054355625 = 230244^2 + 45325^2 .

It is not a de Polignac number, because 55066655161 - 2¹³ = 55066646969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55066655461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 561904596 + ... + 561904693.

It is an arithmetic number, because the mean of its divisors is an integer number (10676188255).

Almost surely, 2^55066655161 is an apocalyptic number.

It is an amenable number.

55066655161 is a deficient number, since it is larger than the sum of its proper divisors (8990474369).

55066655161 is a wasteful number, since it uses less digits than its factorization.

55066655161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123809303 (or 1123809296 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 55066655161 in words is "fifty-five billion, sixty-six million, six hundred fifty-five thousand, one hundred sixty-one".