6557022207556 has 24 divisors (see below), whose sum is σ = 11871044582040. Its totient is φ = 3166878624000.

The previous prime is 6557022207551. The next prime is 6557022207569.

6557022207556 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 989149593600 + 5567872613956 = 994560^2 + 2359634^2 .

It is not an unprimeable number, because it can be changed into a prime (6557022207551) 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, 197913351 + ... + 197946478.

It is an arithmetic number, because the mean of its divisors is an integer number (494626857585).

Almost surely, 2^{6557022207556} is an apocalyptic number.

It is an amenable number.

6557022207556 is a deficient number, since it is larger than the sum of its proper divisors (5314022374484).

6557022207556 is a wasteful number, since it uses less digits than its factorization.

6557022207556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395859975 (or 395859973 counting only the distinct ones).

The product of its (nonzero) digits is 8820000, while the sum is 52.

The spelling of 6557022207556 in words is "six trillion, five hundred fifty-seven billion, twenty-two million, two hundred seven thousand, five hundred fifty-six".