145448755393 has 4 divisors (see below), whose sum is σ = 145451032020. Its totient is φ = 145446478768.

The previous prime is 145448755327. The next prime is 145448755411. The reversal of 145448755393 is 393557844541.

145448755393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 393557844541 = 103 ⋅3820949947.

It can be written as a sum of positive squares in 2 ways, for example, as 105906637489 + 39542117904 = 325433^2 + 198852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145448755393 is a prime.

It is a Smith number, since the sum of its digits (58) 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 (145448755303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1039630 + ... + 1171207.

It is an arithmetic number, because the mean of its divisors is an integer number (36362758005).

Almost surely, 2^145448755393 is an apocalyptic number.

It is an amenable number.

145448755393 is a deficient number, since it is larger than the sum of its proper divisors (2276627).

145448755393 is an equidigital number, since it uses as much as digits as its factorization.

145448755393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276626.

The product of its digits is 36288000, while the sum is 58.

The spelling of 145448755393 in words is "one hundred forty-five billion, four hundred forty-eight million, seven hundred fifty-five thousand, three hundred ninety-three".