80444688068 has 6 divisors (see below), whose sum is σ = 140778204126. Its totient is φ = 40222344032.

The previous prime is 80444688061. The next prime is 80444688091. The reversal of 80444688068 is 86088644408.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 69602047684 + 10842640384 = 263822^2 + 104128^2 .

It is a super-3 number, since 3×80444688068³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (80444688061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055586005 + ... + 10055586012.

It is an arithmetic number, because the mean of its divisors is an integer number (23463034021).

Almost surely, 2^80444688068 is an apocalyptic number.

It is an amenable number.

80444688068 is a deficient number, since it is larger than the sum of its proper divisors (60333516058).

80444688068 is a wasteful number, since it uses less digits than its factorization.

80444688068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20111172021 (or 20111172019 counting only the distinct ones).

The product of its (nonzero) digits is 9437184, while the sum is 56.

The spelling of 80444688068 in words is "eighty billion, four hundred forty-four million, six hundred eighty-eight thousand, sixty-eight".