1445456313523 has 4 divisors (see below), whose sum is σ = 1446267003088. Its totient is φ = 1444645623960.

The previous prime is 1445456313451. The next prime is 1445456313533. The reversal of 1445456313523 is 3253136545441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1445456313523 - 2³⁷ = 1308017360051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445456313533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405342108 + ... + 405345673.

It is an arithmetic number, because the mean of its divisors is an integer number (361566750772).

Almost surely, 2^{1445456313523} is an apocalyptic number.

1445456313523 is a deficient number, since it is larger than the sum of its proper divisors (810689565).

1445456313523 is an equidigital number, since it uses as much as digits as its factorization.

1445456313523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810689564.

The product of its digits is 2592000, while the sum is 46.

The spelling of 1445456313523 in words is "one trillion, four hundred forty-five billion, four hundred fifty-six million, three hundred thirteen thousand, five hundred twenty-three".