2521180660 has 24 divisors (see below), whose sum is σ = 5310488736. Its totient is φ = 1005422880.

The previous prime is 2521180637. The next prime is 2521180667. The reversal of 2521180660 is 660811252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521180667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183802 + ... + 197041.

It is an arithmetic number, because the mean of its divisors is an integer number (221270364).

Almost surely, 2^2521180660 is an apocalyptic number.

2521180660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2521180660 is an abundant number, since it is smaller than the sum of its proper divisors (2789308076).

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

2521180660 is a wasteful number, since it uses less digits than its factorization.

2521180660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381183 (or 381181 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 2521180660 is about 50211.3598700533. The cubic root of 2521180660 is about 1361.0309116866.

The spelling of 2521180660 in words is "two billion, five hundred twenty-one million, one hundred eighty thousand, six hundred sixty".