145143507073 has 4 divisors (see below), whose sum is σ = 145155718980. Its totient is φ = 145131295168.

The previous prime is 145143507059. The next prime is 145143507079. The reversal of 145143507073 is 370705341541.

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

It can be written as a sum of positive squares in 2 ways, for example, as 100240625664 + 44902881409 = 316608^2 + 211903^2 .

It is a cyclic number.

It is not a de Polignac number, because 145143507073 - 2²⁵ = 145109952641 is a prime.

It is a super-3 number, since 3×145143507073³ (a number of 34 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145143507079) 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, 6088108 + ... + 6111901.

It is an arithmetic number, because the mean of its divisors is an integer number (36288929745).

Almost surely, 2^145143507073 is an apocalyptic number.

It is an amenable number.

145143507073 is a deficient number, since it is larger than the sum of its proper divisors (12211907).

145143507073 is a wasteful number, since it uses less digits than its factorization.

145143507073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12211906.

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 145143507073 in words is "one hundred forty-five billion, one hundred forty-three million, five hundred seven thousand, seventy-three".