2652721680 has 80 divisors (see below), whose sum is σ = 9398219904. Its totient is φ = 606336000.

The previous prime is 2652721663. The next prime is 2652721681. The reversal of 2652721680 is 861272562.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (2652721681) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 787821 + ... + 791180.

Almost surely, 2^2652721680 is an apocalyptic number.

2652721680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2652721680 is an abundant number, since it is smaller than the sum of its proper divisors (6745498224).

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

2652721680 is a wasteful number, since it uses less digits than its factorization.

2652721680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579024 (or 1579018 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 2652721680 is about 51504.5792138913. The cubic root of 2652721680 is about 1384.3010944585.

The spelling of 2652721680 in words is "two billion, six hundred fifty-two million, seven hundred twenty-one thousand, six hundred eighty".