21826348741605 has 16 divisors (see below), whose sum is σ = 35581066629120. Its totient is φ = 11421083114688.

The previous prime is 21826348741597. The next prime is 21826348741607. The reversal of 21826348741605 is 50614784362812.

It is not a de Polignac number, because 21826348741605 - 2³ = 21826348741597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21826348741607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13727262565 + ... + 13727264154.

It is an arithmetic number, because the mean of its divisors is an integer number (2223816664320).

Almost surely, 2^{21826348741605} is an apocalyptic number.

It is an amenable number.

21826348741605 is a deficient number, since it is larger than the sum of its proper divisors (13754717887515).

21826348741605 is a wasteful number, since it uses less digits than its factorization.

21826348741605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27454526780.

The product of its (nonzero) digits is 15482880, while the sum is 57.

The spelling of 21826348741605 in words is "twenty-one trillion, eight hundred twenty-six billion, three hundred forty-eight million, seven hundred forty-one thousand, six hundred five".