2666504240 has 20 divisors (see below), whose sum is σ = 6199622544. Its totient is φ = 1066601664.

The previous prime is 2666504219. The next prime is 2666504263. The reversal of 2666504240 is 424056662.

2666504240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×2666504240² = 14220489723875955200, 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 2666504240.

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, 16665572 + ... + 16665731.

Almost surely, 2^2666504240 is an apocalyptic number.

2666504240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666504240 is an abundant number, since it is smaller than the sum of its proper divisors (3533118304).

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

2666504240 is a wasteful number, since it uses less digits than its factorization.

2666504240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33331316 (or 33331310 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 2666504240 is about 51638.2052360459. The cubic root of 2666504240 is about 1386.6943930395.

The spelling of 2666504240 in words is "two billion, six hundred sixty-six million, five hundred four thousand, two hundred forty".