80112666999645 has 24 divisors (see below), whose sum is σ = 158699378438016. Its totient is φ = 36622933485408.

The previous prime is 80112666999593. The next prime is 80112666999649. The reversal of 80112666999645 is 54699966621108.

It is not a de Polignac number, because 80112666999645 - 2¹⁹ = 80112666475357 is a prime.

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 in 23 ways as a sum of consecutive naturals, for example, 127162963177 + ... + 127162963806.

It is an arithmetic number, because the mean of its divisors is an integer number (6612474101584).

Almost surely, 2^{80112666999645} is an apocalyptic number.

It is an amenable number.

80112666999645 is a deficient number, since it is larger than the sum of its proper divisors (78586711438371).

80112666999645 is a wasteful number, since it uses less digits than its factorization.

80112666999645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254325927001 (or 254325926998 counting only the distinct ones).

The product of its (nonzero) digits is 302330880, while the sum is 72.

The spelling of 80112666999645 in words is "eighty trillion, one hundred twelve billion, six hundred sixty-six million, nine hundred ninety-nine thousand, six hundred forty-five".