2721542660 has 24 divisors (see below), whose sum is σ = 5721430680. Its totient is φ = 1087437824.

The previous prime is 2721542657. The next prime is 2721542683. The reversal of 2721542660 is 662451272.

It can be written as a sum of positive squares in 4 ways, for example, as 55472704 + 2666069956 = 7448^2 + 51634^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2721542660.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54659 + ... + 91818.

It is an arithmetic number, because the mean of its divisors is an integer number (238392945).

Almost surely, 2^2721542660 is an apocalyptic number.

2721542660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2721542660 is an abundant number, since it is smaller than the sum of its proper divisors (2999888020).

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

2721542660 is a wasteful number, since it uses less digits than its factorization.

2721542660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147415 (or 147413 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 2721542660 is about 52168.4067228433. The cubic root of 2721542660 is about 1396.1702576667.

The spelling of 2721542660 in words is "two billion, seven hundred twenty-one million, five hundred forty-two thousand, six hundred sixty".