145520423203 has 2 divisors, whose sum is σ = 145520423204. Its totient is φ = 145520423202.

The previous prime is 145520423201. The next prime is 145520423219. The reversal of 145520423203 is 302324025541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145520423203 - 2¹ = 145520423201 is a prime.

Together with 145520423201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145520423201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72760211601 + 72760211602.

It is an arithmetic number, because the mean of its divisors is an integer number (72760211602).

Almost surely, 2^145520423203 is an apocalyptic number.

145520423203 is a deficient number, since it is larger than the sum of its proper divisors (1).

145520423203 is an equidigital number, since it uses as much as digits as its factorization.

145520423203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 145520423203 its reverse (302324025541), we get a palindrome (447844448744).

The spelling of 145520423203 in words is "one hundred forty-five billion, five hundred twenty million, four hundred twenty-three thousand, two hundred three".