6557067212220 has 72 divisors (see below), whose sum is σ = 22731166340064. Its totient is φ = 1498758219648.

The previous prime is 6557067212191. The next prime is 6557067212243. The reversal of 6557067212220 is 222127607556.

6557067212220 is a `hidden beast` number, since 6 + 5 + 570 + 6 + 72 + 1 + 2 + 2 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2602009539 + ... + 2602012058.

It is an arithmetic number, because the mean of its divisors is an integer number (315710643612).

Almost surely, 2^{6557067212220} is an apocalyptic number.

6557067212220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6557067212220 is an abundant number, since it is smaller than the sum of its proper divisors (16174099127844).

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

6557067212220 is a wasteful number, since it uses less digits than its factorization.

6557067212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204021619 (or 5204021614 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 6557067212220 in words is "six trillion, five hundred fifty-seven billion, sixty-seven million, two hundred twelve thousand, two hundred twenty".