2660366380 has 144 divisors (see below), whose sum is σ = 6931814400. Its totient is φ = 839605248.

The previous prime is 2660366351. The next prime is 2660366383. The reversal of 2660366380 is 836630662.

It is a happy number.

2660366380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2660366383) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1900921 + ... + 1902319.

It is an arithmetic number, because the mean of its divisors is an integer number (48137600).

Almost surely, 2^2660366380 is an apocalyptic number.

2660366380 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 2660366380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3465907200).

2660366380 is an abundant number, since it is smaller than the sum of its proper divisors (4271448020).

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

2660366380 is a wasteful number, since it uses less digits than its factorization.

2660366380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496 (or 1477 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 2660366380 is about 51578.7396123635. The cubic root of 2660366380 is about 1385.6295938097.

The spelling of 2660366380 in words is "two billion, six hundred sixty million, three hundred sixty-six thousand, three hundred eighty".