80809907399066 has 32 divisors (see below), whose sum is σ = 128291793297408. Its totient is φ = 38096377229680.

The previous prime is 80809907398993. The next prime is 80809907399069. The reversal of 80809907399066 is 66099370990808.

It is a super-2 number, since 2×80809907399066² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80809907398984 and 80809907399002.

It is not an unprimeable number, because it can be changed into a prime (80809907399069) 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, 14182181 + ... + 19046103.

It is an arithmetic number, because the mean of its divisors is an integer number (4009118540544).

Almost surely, 2^{80809907399066} is an apocalyptic number.

80809907399066 is a deficient number, since it is larger than the sum of its proper divisors (47481885898342).

80809907399066 is a wasteful number, since it uses less digits than its factorization.

80809907399066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4869106.

The product of its (nonzero) digits is 317447424, while the sum is 74.

The spelling of 80809907399066 in words is "eighty trillion, eight hundred nine billion, nine hundred seven million, three hundred ninety-nine thousand, sixty-six".