6617815581222 has 32 divisors (see below), whose sum is σ = 14706375116160. Its totient is φ = 2205920786760.

The previous prime is 6617815581173. The next prime is 6617815581259. The reversal of 6617815581222 is 2221855187166.

6617815581222 is a `hidden beast` number, since 6 + 6 + 1 + 7 + 81 + 558 + 1 + 2 + 2 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7462197 + ... + 8301807.

It is an arithmetic number, because the mean of its divisors is an integer number (459574222380).

Almost surely, 2^{6617815581222} is an apocalyptic number.

6617815581222 is an abundant number, since it is smaller than the sum of its proper divisors (8088559534938).

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

6617815581222 is a wasteful number, since it uses less digits than its factorization.

6617815581222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985585 (or 985579 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The spelling of 6617815581222 in words is "six trillion, six hundred seventeen billion, eight hundred fifteen million, five hundred eighty-one thousand, two hundred twenty-two".