80438566601 has 16 divisors (see below), whose sum is σ = 83510676480. Its totient is φ = 77397543360.

The previous prime is 80438566541. The next prime is 80438566661. The reversal of 80438566601 is 10666583408.

It is an interprime number because it is at equal distance from previous prime (80438566541) and next prime (80438566661).

It is a cyclic number.

It is not a de Polignac number, because 80438566601 - 2²² = 80434372297 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80438566661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3977351 + ... + 3997523.

It is an arithmetic number, because the mean of its divisors is an integer number (5219417280).

Almost surely, 2^80438566601 is an apocalyptic number.

It is an amenable number.

80438566601 is a deficient number, since it is larger than the sum of its proper divisors (3072109879).

80438566601 is a wasteful number, since it uses less digits than its factorization.

80438566601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20936.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 80438566601 in words is "eighty billion, four hundred thirty-eight million, five hundred sixty-six thousand, six hundred one".