21443543502041 has 8 divisors (see below), whose sum is σ = 23097084801120. Its totient is φ = 19842495577632.

The previous prime is 21443543502023. The next prime is 21443543502047. The reversal of 21443543502041 is 14020534534412.

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

It is a cyclic number.

It is not a de Polignac number, because 21443543502041 - 2³⁴ = 21426363632857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21443543501986 and 21443543502004.

It is not an unprimeable number, because it can be changed into a prime (21443543502047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13123342820 + ... + 13123344453.

It is an arithmetic number, because the mean of its divisors is an integer number (2887135600140).

Almost surely, 2^{21443543502041} is an apocalyptic number.

It is an amenable number.

21443543502041 is a deficient number, since it is larger than the sum of its proper divisors (1653541299079).

21443543502041 is a wasteful number, since it uses less digits than its factorization.

21443543502041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26246687335.

The product of its (nonzero) digits is 230400, while the sum is 38.

The spelling of 21443543502041 in words is "twenty-one trillion, four hundred forty-three billion, five hundred forty-three million, five hundred two thousand, forty-one".