80123645 has 8 divisors (see below), whose sum is σ = 109883904. Its totient is φ = 54941904.

The previous prime is 80123639. The next prime is 80123671. The reversal of 80123645 is 54632108.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80123645 - 2¹⁸ = 79861501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 1144589 + ... + 1144658.

It is an arithmetic number, because the mean of its divisors is an integer number (13735488).

Almost surely, 2^80123645 is an apocalyptic number.

It is an amenable number.

80123645 is a deficient number, since it is larger than the sum of its proper divisors (29760259).

80123645 is a wasteful number, since it uses less digits than its factorization.

80123645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289259.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 80123645 is about 8951.1812069693. The cubic root of 80123645 is about 431.1088113036.

The spelling of 80123645 in words is "eighty million, one hundred twenty-three thousand, six hundred forty-five".