6551194911556 has 36 divisors (see below), whose sum is σ = 12103384798764. Its totient is φ = 3102158488000.

The previous prime is 6551194911551. The next prime is 6551194911559.

6551194911556 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 6192214189056 + 358980722500 = 2488416^2 + 599150^2 .

It is a super-2 number, since 2×6551194911556² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6551194911556.

It is not an unprimeable number, because it can be changed into a prime (6551194911551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15113155 + ... + 15540586.

It is an arithmetic number, because the mean of its divisors is an integer number (336205133299).

Almost surely, 2^{6551194911556} is an apocalyptic number.

It is an amenable number.

6551194911556 is a deficient number, since it is larger than the sum of its proper divisors (5552189887208).

6551194911556 is a wasteful number, since it uses less digits than its factorization.

6551194911556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30653892 (or 30653867 counting only the distinct ones).

The product of its digits is 7290000, while the sum is 58.

The spelling of 6551194911556 in words is "six trillion, five hundred fifty-one billion, one hundred ninety-four million, nine hundred eleven thousand, five hundred fifty-six".