21824140801 has 4 divisors (see below), whose sum is σ = 22773016512. Its totient is φ = 20875265092.

The previous prime is 21824140799. The next prime is 21824140873. The reversal of 21824140801 is 10804142812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21824140801 - 2¹ = 21824140799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21824140001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474437821 + ... + 474437866.

It is an arithmetic number, because the mean of its divisors is an integer number (5693254128).

Almost surely, 2^21824140801 is an apocalyptic number.

It is an amenable number.

21824140801 is a deficient number, since it is larger than the sum of its proper divisors (948875711).

21824140801 is an equidigital number, since it uses as much as digits as its factorization.

21824140801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948875710.

The product of its (nonzero) digits is 4096, while the sum is 31.

The spelling of 21824140801 in words is "twenty-one billion, eight hundred twenty-four million, one hundred forty thousand, eight hundred one".