80438173868 has 24 divisors (see below), whose sum is σ = 154080190320. Its totient is φ = 36516697920.

The previous prime is 80438173859. The next prime is 80438173873. The reversal of 80438173868 is 86837183408.

It is a happy number.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12676238 + ... + 12682581.

It is an arithmetic number, because the mean of its divisors is an integer number (6420007930).

Almost surely, 2^80438173868 is an apocalyptic number.

It is an amenable number.

80438173868 is a deficient number, since it is larger than the sum of its proper divisors (73642016452).

80438173868 is a wasteful number, since it uses less digits than its factorization.

80438173868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25358897 (or 25358895 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 56.

The spelling of 80438173868 in words is "eighty billion, four hundred thirty-eight million, one hundred seventy-three thousand, eight hundred sixty-eight".