21741835005 has 24 divisors (see below), whose sum is σ = 41111834400. Its totient is φ = 10541495520.

The previous prime is 21741835001. The next prime is 21741835039. The reversal of 21741835005 is 50053814712.

21741835005 is a `hidden beast` number, since 2 + 1 + 74 + 1 + 83 + 500 + 5 = 666.

It is not a de Polignac number, because 21741835005 - 2² = 21741835001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21741835001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21960955 + ... + 21961944.

It is an arithmetic number, because the mean of its divisors is an integer number (1712993100).

Almost surely, 2^21741835005 is an apocalyptic number.

It is an amenable number.

21741835005 is a deficient number, since it is larger than the sum of its proper divisors (19369999395).

21741835005 is a wasteful number, since it uses less digits than its factorization.

21741835005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43922921 (or 43922918 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 21741835005 in words is "twenty-one billion, seven hundred forty-one million, eight hundred thirty-five thousand, five".