80438139424 has 12 divisors (see below), whose sum is σ = 158362587054. Its totient is φ = 40219069696.

The previous prime is 80438139401. The next prime is 80438139427. The reversal of 80438139424 is 42493183408.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 76655889424 + 3782250000 = 276868^2 + 61500^2 .

It is not an unprimeable number, because it can be changed into a prime (80438139427) 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, 1256845897 + ... + 1256845960.

Almost surely, 2^80438139424 is an apocalyptic number.

It is an amenable number.

80438139424 is a deficient number, since it is larger than the sum of its proper divisors (77924447630).

80438139424 is a wasteful number, since it uses less digits than its factorization.

80438139424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513691867 (or 2513691859 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 80438139424 in words is "eighty billion, four hundred thirty-eight million, one hundred thirty-nine thousand, four hundred twenty-four".