2665085280 has 384 divisors, whose sum is σ = 10113901056. Its totient is φ = 581222400.

The previous prime is 2665085243. The next prime is 2665085281. The reversal of 2665085280 is 825805662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665085281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2813767 + ... + 2814713.

It is an arithmetic number, because the mean of its divisors is an integer number (26338284).

Almost surely, 2^2665085280 is an apocalyptic number.

2665085280 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 2665085280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5056950528).

2665085280 is an abundant number, since it is smaller than the sum of its proper divisors (7448815776).

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

2665085280 is a wasteful number, since it uses less digits than its factorization.

2665085280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 2665085280 is about 51624.4639681615. The cubic root of 2665085280 is about 1386.4483764290.

The spelling of 2665085280 in words is "two billion, six hundred sixty-five million, eighty-five thousand, two hundred eighty".