80112666999646 has 4 divisors (see below), whose sum is σ = 120169000499472. Its totient is φ = 40056333499822.

The previous prime is 80112666999593. The next prime is 80112666999649. The reversal of 80112666999646 is 64699966621108.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80112666999649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20028166749910 + ... + 20028166749913.

It is an arithmetic number, because the mean of its divisors is an integer number (30042250124868).

Almost surely, 2^{80112666999646} is an apocalyptic number.

80112666999646 is a deficient number, since it is larger than the sum of its proper divisors (40056333499826).

80112666999646 is a wasteful number, since it uses less digits than its factorization.

80112666999646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40056333499825.

The product of its (nonzero) digits is 362797056, while the sum is 73.

The spelling of 80112666999646 in words is "eighty trillion, one hundred twelve billion, six hundred sixty-six million, nine hundred ninety-nine thousand, six hundred forty-six".