2666538528 has 24 divisors (see below), whose sum is σ = 6999663888. Its totient is φ = 888846144.

The previous prime is 2666538499. The next prime is 2666538559. The reversal of 2666538528 is 8258356662.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×2666538528² = 14220855442616813568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13888126 + ... + 13888317.

It is an arithmetic number, because the mean of its divisors is an integer number (291652662).

Almost surely, 2^2666538528 is an apocalyptic number.

It is an amenable number.

2666538528 is an abundant number, since it is smaller than the sum of its proper divisors (4333125360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2666538528 is a wasteful number, since it uses less digits than its factorization.

2666538528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27776456 (or 27776448 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 51.

The square root of 2666538528 is about 51638.5372372224. The cubic root of 2666538528 is about 1386.7003367482.

The spelling of 2666538528 in words is "two billion, six hundred sixty-six million, five hundred thirty-eight thousand, five hundred twenty-eight".