21441602073 has 32 divisors (see below), whose sum is σ = 29793525760. Its totient is φ = 13701467520.

The previous prime is 21441602059. The next prime is 21441602107. The reversal of 21441602073 is 37020614412.

It is not a de Polignac number, because 21441602073 - 2⁹ = 21441601561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21441602073.

It is not an unprimeable number, because it can be changed into a prime (21441602003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4742508 + ... + 4747026.

It is an arithmetic number, because the mean of its divisors is an integer number (931047680).

Almost surely, 2^21441602073 is an apocalyptic number.

It is an amenable number.

21441602073 is a deficient number, since it is larger than the sum of its proper divisors (8351923687).

21441602073 is a wasteful number, since it uses less digits than its factorization.

21441602073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5029.

The product of its (nonzero) digits is 8064, while the sum is 30.

The spelling of 21441602073 in words is "twenty-one billion, four hundred forty-one million, six hundred two thousand, seventy-three".