2166655526264 has 16 divisors (see below), whose sum is σ = 4066814749200. Its totient is φ = 1082171593152.

The previous prime is 2166655526263. The next prime is 2166655526291. The reversal of 2166655526264 is 4626255566612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166655526263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144513284 + ... + 144528275.

It is an arithmetic number, because the mean of its divisors is an integer number (254175921825).

Almost surely, 2^{2166655526264} is an apocalyptic number.

It is an amenable number.

2166655526264 is a deficient number, since it is larger than the sum of its proper divisors (1900159222936).

2166655526264 is a wasteful number, since it uses less digits than its factorization.

2166655526264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289042502 (or 289042498 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 56.

The spelling of 2166655526264 in words is "two trillion, one hundred sixty-six billion, six hundred fifty-five million, five hundred twenty-six thousand, two hundred sixty-four".