28556470161 has 16 divisors (see below), whose sum is σ = 42414652800. Its totient is φ = 18988699824.

The previous prime is 28556470139. The next prime is 28556470183. The reversal of 28556470161 is 16107465582.

28556470161 is a `hidden beast` number, since 2 + 8 + 5 + 564 + 70 + 16 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (28556470139) and next prime (28556470183).

It is not a de Polignac number, because 28556470161 - 2¹⁴ = 28556453777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28556470121) 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, 1348941 + ... + 1369946.

It is an arithmetic number, because the mean of its divisors is an integer number (2650915800).

Almost surely, 2^28556470161 is an apocalyptic number.

It is an amenable number.

28556470161 is a deficient number, since it is larger than the sum of its proper divisors (13858182639).

28556470161 is a wasteful number, since it uses less digits than its factorization.

28556470161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719285 (or 2719279 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 28556470161 in words is "twenty-eight billion, five hundred fifty-six million, four hundred seventy thousand, one hundred sixty-one".