4805661720 has 32 divisors (see below), whose sum is σ = 14416985520. Its totient is φ = 1281509760.

The previous prime is 4805661683. The next prime is 4805661727. The reversal of 4805661720 is 271665084.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4805661727) 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 7 ways as a sum of consecutive naturals, for example, 20023471 + ... + 20023710.

Almost surely, 2^4805661720 is an apocalyptic number.

4805661720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4805661720 is an abundant number, since it is smaller than the sum of its proper divisors (9611323800).

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

4805661720 is a wasteful number, since it uses less digits than its factorization.

4805661720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40047195 (or 40047191 counting only the distinct ones).

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

The square root of 4805661720 is about 69322.8802056002. The cubic root of 4805661720 is about 1687.5283032839.

The spelling of 4805661720 in words is "four billion, eight hundred five million, six hundred sixty-one thousand, seven hundred twenty".