6547475489556 has 24 divisors (see below), whose sum is σ = 15941679453504. Its totient is φ = 2087600880640.

The previous prime is 6547475489551. The next prime is 6547475489587. The reversal of 6547475489556 is 6559845747456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6547475489551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11861368365 + ... + 11861368916.

It is an arithmetic number, because the mean of its divisors is an integer number (664236643896).

Almost surely, 2^{6547475489556} is an apocalyptic number.

It is an amenable number.

6547475489556 is an abundant number, since it is smaller than the sum of its proper divisors (9394203963948).

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

6547475489556 is a wasteful number, since it uses less digits than its factorization.

6547475489556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23722737311 (or 23722737309 counting only the distinct ones).

The product of its digits is 5080320000, while the sum is 75.

The spelling of 6547475489556 in words is "six trillion, five hundred forty-seven billion, four hundred seventy-five million, four hundred eighty-nine thousand, five hundred fifty-six".