2021456532641 has 16 divisors (see below), whose sum is σ = 2488632104448. Its totient is φ = 1598953435200.

The previous prime is 2021456532559. The next prime is 2021456532671. The reversal of 2021456532641 is 1462356541202.

It is a cyclic number.

It is not a de Polignac number, because 2021456532641 - 2¹⁰ = 2021456531617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021456532671) 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 15 ways as a sum of consecutive naturals, for example, 2728490 + ... + 3389331.

It is an arithmetic number, because the mean of its divisors is an integer number (155539506528).

Almost surely, 2^{2021456532641} is an apocalyptic number.

It is an amenable number.

2021456532641 is a deficient number, since it is larger than the sum of its proper divisors (467175571807).

2021456532641 is a wasteful number, since it uses less digits than its factorization.

2021456532641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6121472.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 2021456532641 in words is "two trillion, twenty-one billion, four hundred fifty-six million, five hundred thirty-two thousand, six hundred forty-one".