21374443203249 has 8 divisors (see below), whose sum is σ = 28924619658400. Its totient is φ = 14036947775136.

The previous prime is 21374443203101. The next prime is 21374443203263. The reversal of 21374443203249 is 94230234447312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21374443203249 - 2⁸ = 21374443202993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21374443203198 and 21374443203207.

It is not an unprimeable number, because it can be changed into a prime (21374443203749) 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, 53170256524 + ... + 53170256925.

It is an arithmetic number, because the mean of its divisors is an integer number (3615577457300).

Almost surely, 2^{21374443203249} is an apocalyptic number.

It is an amenable number.

21374443203249 is a deficient number, since it is larger than the sum of its proper divisors (7550176455151).

21374443203249 is a wasteful number, since it uses less digits than its factorization.

21374443203249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106340513519.

The product of its (nonzero) digits is 3483648, while the sum is 48.

The spelling of 21374443203249 in words is "twenty-one trillion, three hundred seventy-four billion, four hundred forty-three million, two hundred three thousand, two hundred forty-nine".