143305145497 has 4 divisors (see below), whose sum is σ = 151734859956. Its totient is φ = 134875431040.

The previous prime is 143305145483. The next prime is 143305145507. The reversal of 143305145497 is 794541503341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 794541503341 = 1997 ⋅397867553.

It can be written as a sum of positive squares in 2 ways, for example, as 94409322121 + 48895823376 = 307261^2 + 221124^2 .

It is a cyclic number.

It is not a de Polignac number, because 143305145497 - 2²⁷ = 143170927769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143305145897) 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, 4214857204 + ... + 4214857237.

It is an arithmetic number, because the mean of its divisors is an integer number (37933714989).

Almost surely, 2^143305145497 is an apocalyptic number.

143305145497 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

143305145497 is a deficient number, since it is larger than the sum of its proper divisors (8429714459).

143305145497 is an equidigital number, since it uses as much as digits as its factorization.

143305145497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8429714458.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 143305145497 in words is "one hundred forty-three billion, three hundred five million, one hundred forty-five thousand, four hundred ninety-seven".