2659978752 has 80 divisors (see below), whose sum is σ = 7102795392. Its totient is φ = 884602880.

The previous prime is 2659978751. The next prime is 2659978757. The reversal of 2659978752 is 2578799562.

It is a super-2 number, since 2×2659978752² = 14150973922182955008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2659978751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752413 + ... + 755939.

Almost surely, 2^2659978752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2659978752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3551397696).

2659978752 is an abundant number, since it is smaller than the sum of its proper divisors (4442816640).

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

2659978752 is an equidigital number, since it uses as much as digits as its factorization.

2659978752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039 (or 4023 counting only the distinct ones).

The product of its digits is 19051200, while the sum is 60.

The square root of 2659978752 is about 51574.9818419745. The cubic root of 2659978752 is about 1385.5622929396.

The spelling of 2659978752 in words is "two billion, six hundred fifty-nine million, nine hundred seventy-eight thousand, seven hundred fifty-two".