21814441601827 has 8 divisors (see below), whose sum is σ = 24930952482816. Its totient is φ = 18697971241032.

The previous prime is 21814441601819. The next prime is 21814441601837. The reversal of 21814441601827 is 72810614441812.

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 21814441601827 - 2³ = 21814441601819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21814441601837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8967523 + ... + 11137564.

It is an arithmetic number, because the mean of its divisors is an integer number (3116369060352).

Almost surely, 2^{21814441601827} is an apocalyptic number.

21814441601827 is a deficient number, since it is larger than the sum of its proper divisors (3116510880989).

21814441601827 is a wasteful number, since it uses less digits than its factorization.

21814441601827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20260097.

The product of its (nonzero) digits is 688128, while the sum is 49.

The spelling of 21814441601827 in words is "twenty-one trillion, eight hundred fourteen billion, four hundred forty-one million, six hundred one thousand, eight hundred twenty-seven".