2155654566161 has 8 divisors (see below), whose sum is σ = 2163421263360. Its totient is φ = 2147893948368.

The previous prime is 2155654566137. The next prime is 2155654566167. The reversal of 2155654566161 is 1616654565512.

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 2155654566161 - 2¹⁰ = 2155654565137 is a prime.

It is a super-2 number, since 2×2155654566161² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155654566167) 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, 808811 + ... + 2228336.

It is an arithmetic number, because the mean of its divisors is an integer number (270427657920).

Almost surely, 2^{2155654566161} is an apocalyptic number.

It is an amenable number.

2155654566161 is a deficient number, since it is larger than the sum of its proper divisors (7766697199).

2155654566161 is a wasteful number, since it uses less digits than its factorization.

2155654566161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3039703.

The product of its digits is 6480000, while the sum is 53.

The spelling of 2155654566161 in words is "two trillion, one hundred fifty-five billion, six hundred fifty-four million, five hundred sixty-six thousand, one hundred sixty-one".