80071603538 has 4 divisors (see below), whose sum is σ = 120107405310. Its totient is φ = 40035801768.

The previous prime is 80071603531. The next prime is 80071603561. The reversal of 80071603538 is 83530617008.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 78987416209 + 1084187329 = 281047^2 + 32927^2 .

It is a super-2 number, since 2×80071603538² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80071603495 and 80071603504.

It is not an unprimeable number, because it can be changed into a prime (80071603531) 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, 20017900883 + ... + 20017900886.

Almost surely, 2^80071603538 is an apocalyptic number.

80071603538 is a deficient number, since it is larger than the sum of its proper divisors (40035801772).

80071603538 is a wasteful number, since it uses less digits than its factorization.

80071603538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40035801771.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 80071603538 in words is "eighty billion, seventy-one million, six hundred three thousand, five hundred thirty-eight".