5648129820 has 72 divisors (see below), whose sum is σ = 17292837744. Its totient is φ = 1492086528.

The previous prime is 5648129761. The next prime is 5648129821. The reversal of 5648129820 is 289218465.

5648129820 is a `hidden beast` number, since 564 + 8 + 1 + 2 + 9 + 82 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5648129821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127369 + ... + 165888.

It is an arithmetic number, because the mean of its divisors is an integer number (240178302).

Almost surely, 2^5648129820 is an apocalyptic number.

It is an amenable number.

5648129820 is an abundant number, since it is smaller than the sum of its proper divisors (11644707924).

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

5648129820 is a wasteful number, since it uses less digits than its factorization.

5648129820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293379 (or 293374 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 5648129820 is about 75154.0406099366. The cubic root of 5648129820 is about 1780.8809572675.

The spelling of 5648129820 in words is "five billion, six hundred forty-eight million, one hundred twenty-nine thousand, eight hundred twenty".