2659557920 has 24 divisors (see below), whose sum is σ = 6283205964. Its totient is φ = 1063823104.

The previous prime is 2659557907. The next prime is 2659557959. The reversal of 2659557920 is 297559562.

It can be written as a sum of positive squares in 2 ways, for example, as 2533310224 + 126247696 = 50332^2 + 11236^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8310959 + ... + 8311278.

Almost surely, 2^2659557920 is an apocalyptic number.

2659557920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2659557920 is an abundant number, since it is smaller than the sum of its proper divisors (3623648044).

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

2659557920 is a wasteful number, since it uses less digits than its factorization.

2659557920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16622252 (or 16622244 counting only the distinct ones).

The product of its (nonzero) digits is 1701000, while the sum is 50.

The square root of 2659557920 is about 51570.9018730524. The cubic root of 2659557920 is about 1385.4892197113.

The spelling of 2659557920 in words is "two billion, six hundred fifty-nine million, five hundred fifty-seven thousand, nine hundred twenty".