145553420405 has 4 divisors (see below), whose sum is σ = 174664104492. Its totient is φ = 116442736320.

The previous prime is 145553420393. The next prime is 145553420413. The reversal of 145553420405 is 504024355541.

145553420405 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 can be written as a sum of positive squares in 2 ways, for example, as 80560036561 + 64993383844 = 283831^2 + 254938^2 .

It is not a de Polignac number, because 145553420405 - 2²⁰ = 145552371829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 14555342036 + ... + 14555342045.

It is an arithmetic number, because the mean of its divisors is an integer number (43666026123).

Almost surely, 2^145553420405 is an apocalyptic number.

It is an amenable number.

145553420405 is a deficient number, since it is larger than the sum of its proper divisors (29110684087).

145553420405 is an equidigital number, since it uses as much as digits as its factorization.

145553420405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29110684086.

The product of its (nonzero) digits is 240000, while the sum is 38.

Adding to 145553420405 its reverse (504024355541), we get a palindrome (649577775946).

The spelling of 145553420405 in words is "one hundred forty-five billion, five hundred fifty-three million, four hundred twenty thousand, four hundred five".