145815309443 has 8 divisors (see below), whose sum is σ = 146548520688. Its totient is φ = 145083907584.

The previous prime is 145815309439. The next prime is 145815309467. The reversal of 145815309443 is 344903518541.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145815309443 - 2² = 145815309439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145815302443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290621 + ... + 613262.

It is an arithmetic number, because the mean of its divisors is an integer number (18318565086).

Almost surely, 2^145815309443 is an apocalyptic number.

145815309443 is a deficient number, since it is larger than the sum of its proper divisors (733211245).

145815309443 is an equidigital number, since it uses as much as digits as its factorization.

145815309443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904693.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 145815309443 in words is "one hundred forty-five billion, eight hundred fifteen million, three hundred nine thousand, four hundred forty-three".