2421117666 has 48 divisors (see below), whose sum is σ = 5855747040. Its totient is φ = 716607360.

The previous prime is 2421117653. The next prime is 2421117689. The reversal of 2421117666 is 6667111242.

It is a self number, because there is not a number n which added to its sum of digits gives 2421117666.

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, 133671 + ... + 150698.

It is an arithmetic number, because the mean of its divisors is an integer number (121994730).

Almost surely, 2^2421117666 is an apocalyptic number.

2421117666 is an abundant number, since it is smaller than the sum of its proper divisors (3434629374).

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

2421117666 is a wasteful number, since it uses less digits than its factorization.

2421117666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284431 (or 284428 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 2421117666 is about 49204.8540898152. The cubic root of 2421117666 is about 1342.7813444454.

It can be divided in two parts, 24211176 and 66, that added together give a palindrome (24211242).

The spelling of 2421117666 in words is "two billion, four hundred twenty-one million, one hundred seventeen thousand, six hundred sixty-six".