2521650680 has 64 divisors (see below), whose sum is σ = 5771023200. Its totient is φ = 991457280.

The previous prime is 2521650679. The next prime is 2521650689. The reversal of 2521650680 is 860561252.

It is a self number, because there is not a number n which added to its sum of digits gives 2521650680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521650689) 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 15 ways as a sum of consecutive naturals, for example, 965216 + ... + 967824.

Almost surely, 2^2521650680 is an apocalyptic number.

2521650680 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 2521650680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2885511600).

2521650680 is an abundant number, since it is smaller than the sum of its proper divisors (3249372520).

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

2521650680 is a wasteful number, since it uses less digits than its factorization.

2521650680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024 (or 3020 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 2521650680 is about 50216.0400668950. The cubic root of 2521650680 is about 1361.1154847611.

The spelling of 2521650680 in words is "two billion, five hundred twenty-one million, six hundred fifty thousand, six hundred eighty".