6556788876556 has 24 divisors (see below), whose sum is σ = 11754744326640. Its totient is φ = 3198297312000.

The previous prime is 6556788876509. The next prime is 6556788876571.

6556788876556 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×6556788876556² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (82).

It is a self number, because there is not a number n which added to its sum of digits gives 6556788876556.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3063475 + ... + 4743253.

It is an arithmetic number, because the mean of its divisors is an integer number (489781013610).

Almost surely, 2^{6556788876556} is an apocalyptic number.

It is an amenable number.

6556788876556 is a deficient number, since it is larger than the sum of its proper divisors (5197955450084).

6556788876556 is a wasteful number, since it uses less digits than its factorization.

6556788876556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703625 (or 1703623 counting only the distinct ones).

The product of its digits is 20321280000, while the sum is 82.

The spelling of 6556788876556 in words is "six trillion, five hundred fifty-six billion, seven hundred eighty-eight million, eight hundred seventy-six thousand, five hundred fifty-six".