3668817781822 has 4 divisors (see below), whose sum is σ = 5503226672736. Its totient is φ = 1834408890910.

The previous prime is 3668817781819. The next prime is 3668817781841. The reversal of 3668817781822 is 2281877188663.

3668817781822 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 917204445454 + ... + 917204445457.

It is an arithmetic number, because the mean of its divisors is an integer number (1375806668184).

Almost surely, 2^{3668817781822} is an apocalyptic number.

3668817781822 is a deficient number, since it is larger than the sum of its proper divisors (1834408890914).

3668817781822 is a wasteful number, since it uses less digits than its factorization.

3668817781822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834408890913.

The product of its digits is 86704128, while the sum is 67.

The spelling of 3668817781822 in words is "three trillion, six hundred sixty-eight billion, eight hundred seventeen million, seven hundred eighty-one thousand, eight hundred twenty-two".