145072639438 has 16 divisors (see below), whose sum is σ = 218329434720. Its totient is φ = 72296557696.

The previous prime is 145072639433. The next prime is 145072639447. The reversal of 145072639438 is 834936270541.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145072639433) 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 in 7 ways as a sum of consecutive naturals, for example, 637770 + ... + 834802.

It is an arithmetic number, because the mean of its divisors is an integer number (13645589670).

It is a 1-persistent number, because it is pandigital, but 2⋅145072639438 = 290145278876 is not.

Almost surely, 2^145072639438 is an apocalyptic number.

145072639438 is a deficient number, since it is larger than the sum of its proper divisors (73256795282).

145072639438 is a wasteful number, since it uses less digits than its factorization.

145072639438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198251.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 145072639438 in words is "one hundred forty-five billion, seventy-two million, six hundred thirty-nine thousand, four hundred thirty-eight".