145550204145 has 24 divisors (see below), whose sum is σ = 252456570600. Its totient is φ = 77574606336.

The previous prime is 145550204141. The next prime is 145550204171. The reversal of 145550204145 is 541402055541.

145550204145 is a `hidden beast` number, since 1 + 4 + 5 + 5 + 502 + 0 + 4 + 145 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 36988520976 + 108561683169 = 192324^2 + 329487^2 .

It is not a de Polignac number, because 145550204145 - 2² = 145550204141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145550204141) 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 23 ways as a sum of consecutive naturals, for example, 1019110 + ... + 1153119.

It is an arithmetic number, because the mean of its divisors is an integer number (10519023775).

Almost surely, 2^145550204145 is an apocalyptic number.

145550204145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145550204145 is a deficient number, since it is larger than the sum of its proper divisors (106906366455).

145550204145 is a wasteful number, since it uses less digits than its factorization.

145550204145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173729 (or 2173726 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

Adding to 145550204145 its reverse (541402055541), we get a palindrome (686952259686).

The spelling of 145550204145 in words is "one hundred forty-five billion, five hundred fifty million, two hundred four thousand, one hundred forty-five".