2665043880 has 64 divisors (see below), whose sum is σ = 7999871040. Its totient is φ = 710257152.

The previous prime is 2665043831. The next prime is 2665043917. The reversal of 2665043880 is 883405662.

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, 232852 + ... + 244028.

It is an arithmetic number, because the mean of its divisors is an integer number (124997985).

Almost surely, 2^2665043880 is an apocalyptic number.

2665043880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2665043880 is an abundant number, since it is smaller than the sum of its proper divisors (5334827160).

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

2665043880 is a wasteful number, since it uses less digits than its factorization.

2665043880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13178 (or 13174 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 2665043880 is about 51624.0629939179. The cubic root of 2665043880 is about 1386.4411972641.

The spelling of 2665043880 in words is "two billion, six hundred sixty-five million, forty-three thousand, eight hundred eighty".