6557818228 has 48 divisors (see below), whose sum is σ = 12643047424. Its totient is φ = 2957834880.

The previous prime is 6557818159. The next prime is 6557818229. The reversal of 6557818228 is 8228187556.

It is a super-2 number, since 2×6557818228² = 86009959822978119968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6557818229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435058 + ... + 449878.

Almost surely, 2^6557818228 is an apocalyptic number.

It is an amenable number.

6557818228 is a deficient number, since it is larger than the sum of its proper divisors (6085229196).

6557818228 is a wasteful number, since it uses less digits than its factorization.

6557818228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15032 (or 15030 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 52.

The square root of 6557818228 is about 80980.3570503366. The cubic root of 6557818228 is about 1871.7727693880.

The spelling of 6557818228 in words is "six billion, five hundred fifty-seven million, eight hundred eighteen thousand, two hundred twenty-eight".