80015785723 has 4 divisors (see below), whose sum is σ = 80238671280. Its totient is φ = 79792900168.

The previous prime is 80015785673. The next prime is 80015785727. The reversal of 80015785723 is 32758751008.

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

It is a cyclic number.

It is not a de Polignac number, because 80015785723 - 2⁹ = 80015785211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80015785727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111442240 + ... + 111442957.

It is an arithmetic number, because the mean of its divisors is an integer number (20059667820).

Almost surely, 2^80015785723 is an apocalyptic number.

80015785723 is a deficient number, since it is larger than the sum of its proper divisors (222885557).

80015785723 is a wasteful number, since it uses less digits than its factorization.

80015785723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222885556.

The product of its (nonzero) digits is 470400, while the sum is 46.

The spelling of 80015785723 in words is "eighty billion, fifteen million, seven hundred eighty-five thousand, seven hundred twenty-three".