21443522524445 has 32 divisors (see below), whose sum is σ = 30958029772800. Its totient is φ = 13929342935616.

The previous prime is 21443522524363. The next prime is 21443522524471. The reversal of 21443522524445 is 54442522534412.

It is a cyclic number.

It is not a de Polignac number, because 21443522524445 - 2²⁸ = 21443254088989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21443522524445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9529592 + ... + 11562878.

It is an arithmetic number, because the mean of its divisors is an integer number (967438430400).

Almost surely, 2^{21443522524445} is an apocalyptic number.

It is an amenable number.

21443522524445 is a deficient number, since it is larger than the sum of its proper divisors (9514507248355).

21443522524445 is a wasteful number, since it uses less digits than its factorization.

21443522524445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049177.

The product of its digits is 6144000, while the sum is 47.

The spelling of 21443522524445 in words is "twenty-one trillion, four hundred forty-three billion, five hundred twenty-two million, five hundred twenty-four thousand, four hundred forty-five".