2665120158 has 240 divisors, whose sum is σ = 7007322960. Its totient is φ = 752094720.

The previous prime is 2665120151. The next prime is 2665120223. The reversal of 2665120158 is 8510215662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665120151) 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 119 ways as a sum of consecutive naturals, for example, 50285260 + ... + 50285312.

It is an arithmetic number, because the mean of its divisors is an integer number (29197179).

Almost surely, 2^2665120158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2665120158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3503661480).

2665120158 is an abundant number, since it is smaller than the sum of its proper divisors (4342202802).

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

2665120158 is a wasteful number, since it uses less digits than its factorization.

2665120158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 2665120158 is about 51624.8017720165. The cubic root of 2665120158 is about 1386.4544245576.

The spelling of 2665120158 in words is "two billion, six hundred sixty-five million, one hundred twenty thousand, one hundred fifty-eight".