2665361000 has 64 divisors (see below), whose sum is σ = 6452082000. Its totient is φ = 1029369600.

The previous prime is 2665360993. The next prime is 2665361009. The reversal of 2665361000 is 1635662.

It can be written as a sum of positive squares in 8 ways, for example, as 732351844 + 1933009156 = 27062^2 + 43966^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (2665361009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16955 + ... + 74954.

Almost surely, 2^2665361000 is an apocalyptic number.

2665361000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2665361000 is an abundant number, since it is smaller than the sum of its proper divisors (3786721000).

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

2665361000 is a wasteful number, since it uses less digits than its factorization.

2665361000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91959 (or 91945 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 2665361000 is about 51627.1343384465. The cubic root of 2665361000 is about 1386.4961870772.

Adding to 2665361000 its reverse (1635662), we get a palindrome (2666996662).

The spelling of 2665361000 in words is "two billion, six hundred sixty-five million, three hundred sixty-one thousand".