1445512320111 has 12 divisors (see below), whose sum is σ = 1991527903896. Its totient is φ = 932588591760.

The previous prime is 1445512320101. The next prime is 1445512320137. The reversal of 1445512320111 is 1110232155441.

It is not a de Polignac number, because 1445512320111 - 2¹⁹ = 1445511795823 is a prime.

It is a super-2 number, since 2×1445512320111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445512320101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250692976 + ... + 250698741.

It is an arithmetic number, because the mean of its divisors is an integer number (165960658658).

Almost surely, 2^{1445512320111} is an apocalyptic number.

1445512320111 is a deficient number, since it is larger than the sum of its proper divisors (546015583785).

1445512320111 is an equidigital number, since it uses as much as digits as its factorization.

1445512320111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501391782 (or 501391751 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 1445512320111 its reverse (1110232155441), we get a palindrome (2555744475552).

The spelling of 1445512320111 in words is "one trillion, four hundred forty-five billion, five hundred twelve million, three hundred twenty thousand, one hundred eleven".