6643125062256 has 80 divisors (see below), whose sum is σ = 17184354304544. Its totient is φ = 2211414884352.

The previous prime is 6643125062251. The next prime is 6643125062297. The reversal of 6643125062256 is 6522605213466.

It is a super-2 number, since 2×6643125062256² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6643125062251) 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 15 ways as a sum of consecutive naturals, for example, 382285440 + ... + 382302816.

Almost surely, 2^{6643125062256} is an apocalyptic number.

It is an amenable number.

6643125062256 is an abundant number, since it is smaller than the sum of its proper divisors (10541229242288).

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

6643125062256 is a wasteful number, since it uses less digits than its factorization.

6643125062256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27578 (or 27572 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 6643125062256 in words is "six trillion, six hundred forty-three billion, one hundred twenty-five million, sixty-two thousand, two hundred fifty-six".