2751665720 has 32 divisors (see below), whose sum is σ = 6460434720. Its totient is φ = 1052810880.

The previous prime is 2751665627. The next prime is 2751665729. The reversal of 2751665720 is 275661572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2751665729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1494551 + ... + 1496390.

It is an arithmetic number, because the mean of its divisors is an integer number (201888585).

Almost surely, 2^2751665720 is an apocalyptic number.

2751665720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2751665720 is an abundant number, since it is smaller than the sum of its proper divisors (3708769000).

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

2751665720 is a wasteful number, since it uses less digits than its factorization.

2751665720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990975 (or 2990971 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 2751665720 is about 52456.3220212779. The cubic root of 2751665720 is about 1401.3024817456.

The spelling of 2751665720 in words is "two billion, seven hundred fifty-one million, six hundred sixty-five thousand, seven hundred twenty".