145512974443 has 4 divisors (see below), whose sum is σ = 145520146360. Its totient is φ = 145505802528.

The previous prime is 145512974401. The next prime is 145512974471. The reversal of 145512974443 is 344479215541.

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 145512974443 - 2²⁵ = 145479420011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145512974843) 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, 3555438 + ... + 3596131.

It is an arithmetic number, because the mean of its divisors is an integer number (36380036590).

Almost surely, 2^145512974443 is an apocalyptic number.

145512974443 is a deficient number, since it is larger than the sum of its proper divisors (7171917).

145512974443 is an equidigital number, since it uses as much as digits as its factorization.

145512974443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7171916.

The product of its digits is 2419200, while the sum is 49.

The spelling of 145512974443 in words is "one hundred forty-five billion, five hundred twelve million, nine hundred seventy-four thousand, four hundred forty-three".