2665432120 has 64 divisors (see below), whose sum is σ = 6536466720. Its totient is φ = 972286464.

The previous prime is 2665432109. The next prime is 2665432127. The reversal of 2665432120 is 212345662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665432127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12282 + ... + 74038.

Almost surely, 2^2665432120 is an apocalyptic number.

2665432120 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 2665432120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3268233360).

2665432120 is an abundant number, since it is smaller than the sum of its proper divisors (3871034600).

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

2665432120 is a wasteful number, since it uses less digits than its factorization.

2665432120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61864 (or 61860 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 2665432120 is about 51627.8231189346. The cubic root of 2665432120 is about 1386.5085189566.

Adding to 2665432120 its reverse (212345662), we get a palindrome (2877777782).

The spelling of 2665432120 in words is "two billion, six hundred sixty-five million, four hundred thirty-two thousand, one hundred twenty".