1438529721532 has 12 divisors (see below), whose sum is σ = 2517969711040. Its totient is φ = 719109804096.

The previous prime is 1438529721521. The next prime is 1438529721539. The reversal of 1438529721532 is 2351279258341.

It is a self number, because there is not a number n which added to its sum of digits gives 1438529721532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438529721539) 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 3 ways as a sum of consecutive naturals, for example, 38743293 + ... + 38780404.

Almost surely, 2^{1438529721532} is an apocalyptic number.

It is an amenable number.

1438529721532 is a deficient number, since it is larger than the sum of its proper divisors (1079439989508).

1438529721532 is a wasteful number, since it uses less digits than its factorization.

1438529721532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77528340 (or 77528338 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 52.

The spelling of 1438529721532 in words is "one trillion, four hundred thirty-eight billion, five hundred twenty-nine million, seven hundred twenty-one thousand, five hundred thirty-two".