1445552523321 has 16 divisors (see below), whose sum is σ = 1947435522240. Its totient is φ = 953694907200.

The previous prime is 1445552523313. The next prime is 1445552523323. The reversal of 1445552523321 is 1233252555441.

It is not a de Polignac number, because 1445552523321 - 2³ = 1445552523313 is a prime.

It is a super-4 number, since 4×1445552523321⁴ (a number of 50 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1445552523323) 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, 539851 + ... + 1783968.

It is an arithmetic number, because the mean of its divisors is an integer number (121714720140).

Almost surely, 2^{1445552523321} is an apocalyptic number.

It is an amenable number.

1445552523321 is a deficient number, since it is larger than the sum of its proper divisors (501882998919).

1445552523321 is a wasteful number, since it uses less digits than its factorization.

1445552523321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325976.

The product of its digits is 720000, while the sum is 42.

The spelling of 1445552523321 in words is "one trillion, four hundred forty-five billion, five hundred fifty-two million, five hundred twenty-three thousand, three hundred twenty-one".