21804254701 has 8 divisors (see below), whose sum is σ = 22176158400. Its totient is φ = 21432429120.

The previous prime is 21804254699. The next prime is 21804254777. The reversal of 21804254701 is 10745240812.

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 21804254701 - 2¹ = 21804254699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21804254501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 946245 + ... + 969013.

It is an arithmetic number, because the mean of its divisors is an integer number (2772019800).

Almost surely, 2^21804254701 is an apocalyptic number.

It is an amenable number.

21804254701 is a deficient number, since it is larger than the sum of its proper divisors (371903699).

21804254701 is a wasteful number, since it uses less digits than its factorization.

21804254701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39059.

The product of its (nonzero) digits is 17920, while the sum is 34.

The spelling of 21804254701 in words is "twenty-one billion, eight hundred four million, two hundred fifty-four thousand, seven hundred one".