145203578903 has 4 divisors (see below), whose sum is σ = 148293016800. Its totient is φ = 142114141008.

The previous prime is 145203578893. The next prime is 145203578917. The reversal of 145203578903 is 309875302541.

145203578903 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.

It is a cyclic number.

It is not a de Polignac number, because 145203578903 - 2¹⁰ = 145203577879 is a prime.

It is a super-3 number, since 3×145203578903³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 3089437849 = 145203578903 / (1 + 4 + 5 + 2 + 0 + 3 + 5 + 7 + 8 + 9 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145203578203) 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, 1544718878 + ... + 1544718971.

It is an arithmetic number, because the mean of its divisors is an integer number (37073254200).

Almost surely, 2^145203578903 is an apocalyptic number.

145203578903 is a deficient number, since it is larger than the sum of its proper divisors (3089437897).

145203578903 is an equidigital number, since it uses as much as digits as its factorization.

145203578903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3089437896.

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 145203578903 in words is "one hundred forty-five billion, two hundred three million, five hundred seventy-eight thousand, nine hundred three".