2215144113666 has 24 divisors (see below), whose sum is σ = 4869655656432. Its totient is φ = 671255791800.

The previous prime is 2215144113647. The next prime is 2215144113671. The reversal of 2215144113666 is 6663114415122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1525580620 + ... + 1525582071.

It is an arithmetic number, because the mean of its divisors is an integer number (202902319018).

Almost surely, 2^{2215144113666} is an apocalyptic number.

2215144113666 is an abundant number, since it is smaller than the sum of its proper divisors (2654511542766).

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

2215144113666 is a wasteful number, since it uses less digits than its factorization.

2215144113666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051162718 (or 3051162707 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

Adding to 2215144113666 its reverse (6663114415122), we get a palindrome (8878258528788).

The spelling of 2215144113666 in words is "two trillion, two hundred fifteen billion, one hundred forty-four million, one hundred thirteen thousand, six hundred sixty-six".