2668085218438 has 8 divisors (see below), whose sum is σ = 4020074589888. Its totient is φ = 1328060355144.

The previous prime is 2668085218369. The next prime is 2668085218439. The reversal of 2668085218438 is 8348125808662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668085218439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2991126481 + ... + 2991127372.

It is an arithmetic number, because the mean of its divisors is an integer number (502509323736).

Almost surely, 2^{2668085218438} is an apocalyptic number.

2668085218438 is a deficient number, since it is larger than the sum of its proper divisors (1351989371450).

2668085218438 is a wasteful number, since it uses less digits than its factorization.

2668085218438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5982254078.

The product of its (nonzero) digits is 35389440, while the sum is 61.

The spelling of 2668085218438 in words is "two trillion, six hundred sixty-eight billion, eighty-five million, two hundred eighteen thousand, four hundred thirty-eight".