20445041061021 has 16 divisors (see below), whose sum is σ = 27556574284800. Its totient is φ = 13482154204848.

The previous prime is 20445041060999. The next prime is 20445041061031. The reversal of 20445041061021 is 12016014054402.

It is not a de Polignac number, because 20445041061021 - 2⁷ = 20445041060893 is a prime.

It is a super-3 number, since 3×20445041061021³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20445041061021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20445041061031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48112981 + ... + 48536058.

It is an arithmetic number, because the mean of its divisors is an integer number (1722285892800).

Almost surely, 2^{20445041061021} is an apocalyptic number.

It is an amenable number.

20445041061021 is a deficient number, since it is larger than the sum of its proper divisors (7111533223779).

20445041061021 is a wasteful number, since it uses less digits than its factorization.

20445041061021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96649808.

The product of its (nonzero) digits is 7680, while the sum is 30.

The spelling of 20445041061021 in words is "twenty trillion, four hundred forty-five billion, forty-one million, sixty-one thousand, twenty-one".