28077112571 has 4 divisors (see below), whose sum is σ = 28082008944. Its totient is φ = 28072216200.

The previous prime is 28077112559. The next prime is 28077112607. The reversal of 28077112571 is 17521177082.

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 28077112571 - 2⁶ = 28077112507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28077132571) 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, 2439575 + ... + 2451056.

It is an arithmetic number, because the mean of its divisors is an integer number (7020502236).

Almost surely, 2^28077112571 is an apocalyptic number.

28077112571 is a deficient number, since it is larger than the sum of its proper divisors (4896373).

28077112571 is an equidigital number, since it uses as much as digits as its factorization.

28077112571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4896372.

The product of its (nonzero) digits is 54880, while the sum is 41.

The spelling of 28077112571 in words is "twenty-eight billion, seventy-seven million, one hundred twelve thousand, five hundred seventy-one".