2666404520 has 64 divisors (see below), whose sum is σ = 6800976000. Its totient is φ = 932698368.

The previous prime is 2666404483. The next prime is 2666404541. The reversal of 2666404520 is 254046662.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125060 + ... + 144819.

It is an arithmetic number, because the mean of its divisors is an integer number (106265250).

Almost surely, 2^2666404520 is an apocalyptic number.

2666404520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666404520 is an abundant number, since it is smaller than the sum of its proper divisors (4134571480).

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

2666404520 is a wasteful number, since it uses less digits than its factorization.

2666404520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269922 (or 269918 counting only the distinct ones).

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

The square root of 2666404520 is about 51637.2396628635. The cubic root of 2666404520 is about 1386.6771066255.

The spelling of 2666404520 in words is "two billion, six hundred sixty-six million, four hundred four thousand, five hundred twenty".