2666805080 has 32 divisors (see below), whose sum is σ = 6026765040. Its totient is φ = 1062019200.

The previous prime is 2666805077. The next prime is 2666805139. The reversal of 2666805080 is 805086662.

It is a super-2 number, since 2×2666805080² = 14223698669427612800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137771 + ... + 155930.

Almost surely, 2^2666805080 is an apocalyptic number.

2666805080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666805080 is an abundant number, since it is smaller than the sum of its proper divisors (3359959960).

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

2666805080 is a wasteful number, since it uses less digits than its factorization.

2666805080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293939 (or 293935 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 2666805080 is about 51641.1181133794. The cubic root of 2666805080 is about 1386.7465408975.

The spelling of 2666805080 in words is "two billion, six hundred sixty-six million, eight hundred five thousand, eighty".