2666522655161 has 8 divisors (see below), whose sum is σ = 2824367291424. Its totient is φ = 2508788059200.

The previous prime is 2666522655131. The next prime is 2666522655197. The reversal of 2666522655161 is 1615562256662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2666522655161 - 2²² = 2666518460857 is a prime.

It is a super-2 number, since 2×2666522655161² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2666522655131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27460175 + ... + 27557108.

It is an arithmetic number, because the mean of its divisors is an integer number (353045911428).

Almost surely, 2^{2666522655161} is an apocalyptic number.

It is an amenable number.

2666522655161 is a deficient number, since it is larger than the sum of its proper divisors (157844636263).

2666522655161 is a wasteful number, since it uses less digits than its factorization.

2666522655161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55020151.

The product of its digits is 7776000, while the sum is 53.

The spelling of 2666522655161 in words is "two trillion, six hundred sixty-six billion, five hundred twenty-two million, six hundred fifty-five thousand, one hundred sixty-one".