28421425177 has 16 divisors (see below), whose sum is σ = 30907699200. Its totient is φ = 26035618320.

The previous prime is 28421425159. The next prime is 28421425187. The reversal of 28421425177 is 77152412482.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28421425177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28421425127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 722388 + ... + 760714.

It is an arithmetic number, because the mean of its divisors is an integer number (1931731200).

Almost surely, 2^28421425177 is an apocalyptic number.

It is an amenable number.

28421425177 is a deficient number, since it is larger than the sum of its proper divisors (2486274023).

28421425177 is a wasteful number, since it uses less digits than its factorization.

28421425177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39636.

The product of its digits is 250880, while the sum is 43.

The spelling of 28421425177 in words is "twenty-eight billion, four hundred twenty-one million, four hundred twenty-five thousand, one hundred seventy-seven".