1445451031523 has 16 divisors (see below), whose sum is σ = 1455215149056. Its totient is φ = 1435729428000.

The previous prime is 1445451031517. The next prime is 1445451031627. The reversal of 1445451031523 is 3251301545441.

It is a cyclic number.

It is not a de Polignac number, because 1445451031523 - 2⁶ = 1445451031459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445451031823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105554465 + ... + 105568157.

It is an arithmetic number, because the mean of its divisors is an integer number (90950946816).

Almost surely, 2^{1445451031523} is an apocalyptic number.

1445451031523 is a deficient number, since it is larger than the sum of its proper divisors (9764117533).

1445451031523 is a wasteful number, since it uses less digits than its factorization.

1445451031523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15194.

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 1445451031523 its reverse (3251301545441), we get a palindrome (4696752576964).

The spelling of 1445451031523 in words is "one trillion, four hundred forty-five billion, four hundred fifty-one million, thirty-one thousand, five hundred twenty-three".