145405220035331 has 4 divisors (see below), whose sum is σ = 153058126353000. Its totient is φ = 137752313717664.

The previous prime is 145405220035267. The next prime is 145405220035363. The reversal of 145405220035331 is 133530022504541.

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 145405220035331 - 2⁶ = 145405220035267 is a prime.

It is a super-2 number, since 2×145405220035331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145405220535331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3826453158806 + ... + 3826453158843.

It is an arithmetic number, because the mean of its divisors is an integer number (38264531588250).

Almost surely, 2^{145405220035331} is an apocalyptic number.

145405220035331 is a deficient number, since it is larger than the sum of its proper divisors (7652906317669).

145405220035331 is an equidigital number, since it uses as much as digits as its factorization.

145405220035331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7652906317668.

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 145405220035331 its reverse (133530022504541), we get a palindrome (278935242539872).

The spelling of 145405220035331 in words is "one hundred forty-five trillion, four hundred five billion, two hundred twenty million, thirty-five thousand, three hundred thirty-one".