321103565441453 has 16 divisors (see below), whose sum is σ = 341633321533440. Its totient is φ = 301148388025584.

The previous prime is 321103565441423. The next prime is 321103565441467. The reversal of 321103565441453 is 354144565301123.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 321103565441453 - 2¹⁶ = 321103565375917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321103565441398 and 321103565441407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321103565441423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308393501 + ... + 309432962.

It is an arithmetic number, because the mean of its divisors is an integer number (21352082595840).

Almost surely, 2^{321103565441453} is an apocalyptic number.

It is an amenable number.

321103565441453 is a deficient number, since it is larger than the sum of its proper divisors (20529756091987).

321103565441453 is a wasteful number, since it uses less digits than its factorization.

321103565441453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617826928.

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 321103565441453 in words is "three hundred twenty-one trillion, one hundred three billion, five hundred sixty-five million, four hundred forty-one thousand, four hundred fifty-three".