2666645852 has 48 divisors (see below), whose sum is σ = 5269458432. Its totient is φ = 1171558080.

The previous prime is 2666645843. The next prime is 2666645873. The reversal of 2666645852 is 2585466662.

It is a super-2 number, since 2×2666645852² = 14222000199977611808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2666645852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247073 + ... + 257639.

It is an arithmetic number, because the mean of its divisors is an integer number (109780384).

Almost surely, 2^2666645852 is an apocalyptic number.

It is an amenable number.

2666645852 is a deficient number, since it is larger than the sum of its proper divisors (2602812580).

2666645852 is a wasteful number, since it uses less digits than its factorization.

2666645852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10818 (or 10816 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 50.

The square root of 2666645852 is about 51639.5764118956. The cubic root of 2666645852 is about 1386.7189406709.

The spelling of 2666645852 in words is "two billion, six hundred sixty-six million, six hundred forty-five thousand, eight hundred fifty-two".