6220139648 has 24 divisors (see below), whose sum is σ = 12393462315. Its totient is φ = 3109623680.

The previous prime is 6220139591. The next prime is 6220139657. The reversal of 6220139648 is 8469310226.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 3110069824 + 3110069824 = 55768^2 + 55768^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=55768.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 888803 + ... + 895773.

Almost surely, 2^6220139648 is an apocalyptic number.

It is an amenable number.

6220139648 is a deficient number, since it is larger than the sum of its proper divisors (6173322667).

6220139648 is an frugal number, since it uses more digits than its factorization.

6220139648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13956 (or 6973 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 6220139648 is about 78867.8619464228. The cubic root of 6220139648 is about 1839.0775590572.

The spelling of 6220139648 in words is "six billion, two hundred twenty million, one hundred thirty-nine thousand, six hundred forty-eight".