21444055413105 has 32 divisors (see below), whose sum is σ = 36987042677760. Its totient is φ = 10546420389120.

The previous prime is 21444055413061. The next prime is 21444055413133. The reversal of 21444055413105 is 50131455044412.

It is not a de Polignac number, because 21444055413105 - 2⁶ = 21444055413041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 55290870 + ... + 55677359.

It is an arithmetic number, because the mean of its divisors is an integer number (1155845083680).

Almost surely, 2^{21444055413105} is an apocalyptic number.

It is an amenable number.

21444055413105 is a deficient number, since it is larger than the sum of its proper divisors (15542987264655).

21444055413105 is a wasteful number, since it uses less digits than its factorization.

21444055413105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110969241.

The product of its (nonzero) digits is 192000, while the sum is 39.

The spelling of 21444055413105 in words is "twenty-one trillion, four hundred forty-four billion, fifty-five million, four hundred thirteen thousand, one hundred five".