6547989982464 has 432 divisors, whose sum is σ = 22374495561600. Its totient is φ = 1801977053184.

The previous prime is 6547989982441. The next prime is 6547989982489. The reversal of 6547989982464 is 4642899897456.

6547989982464 is a `hidden beast` number, since 6 + 5 + 4 + 79 + 8 + 9 + 9 + 82 + 464 = 666.

It is a super-2 number, since 2×6547989982464² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 195954622 + ... + 195988034.

It is an arithmetic number, because the mean of its divisors is an integer number (51792813800).

Almost surely, 2^{6547989982464} is an apocalyptic number.

6547989982464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6547989982464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11187247780800).

6547989982464 is an abundant number, since it is smaller than the sum of its proper divisors (15826505579136).

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

6547989982464 is a wasteful number, since it uses less digits than its factorization.

6547989982464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33890 (or 33873 counting only the distinct ones).

The product of its digits is 7524679680, while the sum is 81.

The spelling of 6547989982464 in words is "six trillion, five hundred forty-seven billion, nine hundred eighty-nine million, nine hundred eighty-two thousand, four hundred sixty-four".