2166655552 has 28 divisors (see below), whose sum is σ = 4317327916. Its totient is φ = 1078824960.

The previous prime is 2166655507. The next prime is 2166655571. The reversal of 2166655552 is 2555566612.

It can be written as a sum of positive squares in 2 ways, for example, as 1187215936 + 979439616 = 34456^2 + 31296^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2166655499 and 2166655508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54813 + ... + 85660.

Almost surely, 2^2166655552 is an apocalyptic number.

It is an amenable number.

2166655552 is a deficient number, since it is larger than the sum of its proper divisors (2150672364).

2166655552 is a wasteful number, since it uses less digits than its factorization.

2166655552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140726 (or 140716 counting only the distinct ones).

The product of its digits is 540000, while the sum is 43.

The square root of 2166655552 is about 46547.3474217382. The cubic root of 2166655552 is about 1293.9871334502.

The spelling of 2166655552 in words is "two billion, one hundred sixty-six million, six hundred fifty-five thousand, five hundred fifty-two".