28056106577 has 8 divisors (see below), whose sum is σ = 28318190976. Its totient is φ = 27794264512.

The previous prime is 28056106487. The next prime is 28056106597. The reversal of 28056106577 is 77560165082.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28056106577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28056106597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176348 + ... + 295314.

It is an arithmetic number, because the mean of its divisors is an integer number (3539773872).

Almost surely, 2^28056106577 is an apocalyptic number.

It is an amenable number.

28056106577 is a deficient number, since it is larger than the sum of its proper divisors (262084399).

28056106577 is a wasteful number, since it uses less digits than its factorization.

28056106577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121167.

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 28056106577 in words is "twenty-eight billion, fifty-six million, one hundred six thousand, five hundred seventy-seven".