145238440052 has 6 divisors (see below), whose sum is σ = 254167270098. Its totient is φ = 72619220024.

The previous prime is 145238440051. The next prime is 145238440073. The reversal of 145238440052 is 250044832541.

It can be written as a sum of positive squares in only one way, i.e., 132782987236 + 12455452816 = 364394^2 + 111604^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145238439988 and 145238440015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145238440051) 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, 18154805003 + ... + 18154805010.

It is an arithmetic number, because the mean of its divisors is an integer number (42361211683).

Almost surely, 2^145238440052 is an apocalyptic number.

It is an amenable number.

145238440052 is a deficient number, since it is larger than the sum of its proper divisors (108928830046).

145238440052 is a wasteful number, since it uses less digits than its factorization.

145238440052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36309610017 (or 36309610015 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 38.

The spelling of 145238440052 in words is "one hundred forty-five billion, two hundred thirty-eight million, four hundred forty thousand, fifty-two".