2669345280 has 480 divisors, whose sum is σ = 10974547584. Its totient is φ = 609140736.

The previous prime is 2669345267. The next prime is 2669345311. The reversal of 2669345280 is 825439662.

2669345280 is a `hidden beast` number, since 26 + 6 + 9 + 345 + 280 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4354254 + ... + 4354866.

Almost surely, 2^2669345280 is an apocalyptic number.

2669345280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2669345280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5487273792).

2669345280 is an abundant number, since it is smaller than the sum of its proper divisors (8305202304).

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

2669345280 is an frugal number, since it uses more digits than its factorization.

2669345280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 2669345280 is about 51665.7070018402. The cubic root of 2669345280 is about 1387.1867050126.

The spelling of 2669345280 in words is "two billion, six hundred sixty-nine million, three hundred forty-five thousand, two hundred eighty".