22644336536021 has 4 divisors (see below), whose sum is σ = 22745880646272. Its totient is φ = 22542792425772.

The previous prime is 22644336535991. The next prime is 22644336536023. The reversal of 22644336536021 is 12063563344622.

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 22644336536021 - 2¹⁰ = 22644336534997 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 (22644336536023) 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, 50772054791 + ... + 50772055236.

It is an arithmetic number, because the mean of its divisors is an integer number (5686470161568).

Almost surely, 2^{22644336536021} is an apocalyptic number.

It is an amenable number.

22644336536021 is a deficient number, since it is larger than the sum of its proper divisors (101544110251).

22644336536021 is a wasteful number, since it uses less digits than its factorization.

22644336536021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101544110250.

The product of its (nonzero) digits is 3732480, while the sum is 47.

The spelling of 22644336536021 in words is "twenty-two trillion, six hundred forty-four billion, three hundred thirty-six million, five hundred thirty-six thousand, twenty-one".