145220404222052 has 12 divisors (see below), whose sum is σ = 262899007643580. Its totient is φ = 70106402038176.

The previous prime is 145220404222009. The next prime is 145220404222093. The reversal of 145220404222052 is 250222404022541.

145220404222052 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 37692919975936 + 107527484246116 = 6139456^2 + 10369546^2 .

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, 625950018083 + ... + 625950018314.

It is an arithmetic number, because the mean of its divisors is an integer number (21908250636965).

Almost surely, 2^{145220404222052} is an apocalyptic number.

It is an amenable number.

145220404222052 is a deficient number, since it is larger than the sum of its proper divisors (117678603421528).

145220404222052 is a wasteful number, since it uses less digits than its factorization.

145220404222052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251900036430 (or 1251900036428 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 35.

Adding to 145220404222052 its reverse (250222404022541), we get a palindrome (395442808244593).

The spelling of 145220404222052 in words is "one hundred forty-five trillion, two hundred twenty billion, four hundred four million, two hundred twenty-two thousand, fifty-two".