145638813338 has 16 divisors (see below), whose sum is σ = 230448460320. Its totient is φ = 68839074576.

The previous prime is 145638813311. The next prime is 145638813361. The reversal of 145638813338 is 833318836541.

It is a self number, because there is not a number n which added to its sum of digits gives 145638813338.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4085681 + ... + 4121172.

It is an arithmetic number, because the mean of its divisors is an integer number (14403028770).

Almost surely, 2^145638813338 is an apocalyptic number.

145638813338 is a deficient number, since it is larger than the sum of its proper divisors (84809646982).

145638813338 is a wasteful number, since it uses less digits than its factorization.

145638813338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8207341.

The product of its digits is 4976640, while the sum is 53.

The spelling of 145638813338 in words is "one hundred forty-five billion, six hundred thirty-eight million, eight hundred thirteen thousand, three hundred thirty-eight".