6550656500556 has 120 divisors (see below), whose sum is σ = 19594710901920. Its totient is φ = 1869357927168.

The previous prime is 6550656500543. The next prime is 6550656500569. The reversal of 6550656500556 is 6550056560556.

It is an interprime number because it is at equal distance from previous prime (6550656500543) and next prime (6550656500569).

It is a super-2 number, since 2×6550656500556² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 138136 + ... + 3622208.

It is an arithmetic number, because the mean of its divisors is an integer number (163289257516).

Almost surely, 2^{6550656500556} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6550656500556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9797355450960).

6550656500556 is an abundant number, since it is smaller than the sum of its proper divisors (13044054401364).

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

6550656500556 is a wasteful number, since it uses less digits than its factorization.

6550656500556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484925 (or 3484914 counting only the distinct ones).

The product of its (nonzero) digits is 20250000, while the sum is 54.

The spelling of 6550656500556 in words is "six trillion, five hundred fifty billion, six hundred fifty-six million, five hundred thousand, five hundred fifty-six".