2659129920 has 84 divisors (see below), whose sum is σ = 9146308860. Its totient is φ = 709100544.

The previous prime is 2659129871. The next prime is 2659129943. The reversal of 2659129920 is 299219562.

2659129920 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 614643264 + 2044486656 = 24792^2 + 45216^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 458775 + ... + 464534.

Almost surely, 2^2659129920 is an apocalyptic number.

2659129920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2659129920 is an abundant number, since it is smaller than the sum of its proper divisors (6487178940).

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

2659129920 is a wasteful number, since it uses less digits than its factorization.

2659129920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923332 (or 923319 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 2659129920 is about 51566.7520792225. The cubic root of 2659129920 is about 1385.4148939253.

The spelling of 2659129920 in words is "two billion, six hundred fifty-nine million, one hundred twenty-nine thousand, nine hundred twenty".