2021662642004 has 12 divisors (see below), whose sum is σ = 3538180549344. Its totient is φ = 1010753913624.

The previous prime is 2021662641991. The next prime is 2021662642009. The reversal of 2021662642004 is 4002462661202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021662642009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19293062 + ... + 19397565.

It is an arithmetic number, because the mean of its divisors is an integer number (294848379112).

Almost surely, 2^{2021662642004} is an apocalyptic number.

It is an amenable number.

2021662642004 is a deficient number, since it is larger than the sum of its proper divisors (1516517907340).

2021662642004 is a wasteful number, since it uses less digits than its factorization.

2021662642004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38703694 (or 38703692 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 2021662642004 in words is "two trillion, twenty-one billion, six hundred sixty-two million, six hundred forty-two thousand, four".