2166148655 has 12 divisors (see below), whose sum is σ = 2857168776. Its totient is φ = 1575380400.

The previous prime is 2166148603. The next prime is 2166148679. The reversal of 2166148655 is 5568416612.

It is not a de Polignac number, because 2166148655 - 2¹⁰ = 2166147631 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1789601 + ... + 1790810.

It is an arithmetic number, because the mean of its divisors is an integer number (238097398).

Almost surely, 2^2166148655 is an apocalyptic number.

2166148655 is a deficient number, since it is larger than the sum of its proper divisors (691020121).

2166148655 is a wasteful number, since it uses less digits than its factorization.

2166148655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580438 (or 3580427 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 2166148655 is about 46541.9021420483. The cubic root of 2166148655 is about 1293.8862145703.

The spelling of 2166148655 in words is "two billion, one hundred sixty-six million, one hundred forty-eight thousand, six hundred fifty-five".