28557077211 has 48 divisors (see below), whose sum is σ = 45160469536. Its totient is φ = 17282377728.

The previous prime is 28557077191. The next prime is 28557077221. The reversal of 28557077211 is 11277075582.

28557077211 is a `hidden beast` number, since 2 + 8 + 5 + 570 + 7 + 72 + 1 + 1 = 666.

It is not a de Polignac number, because 28557077211 - 2⁹ = 28557076699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28557077221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5272941 + ... + 5278353.

Almost surely, 2^28557077211 is an apocalyptic number.

28557077211 is a deficient number, since it is larger than the sum of its proper divisors (16603392325).

28557077211 is a wasteful number, since it uses less digits than its factorization.

28557077211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6172 (or 6169 counting only the distinct ones).

The product of its (nonzero) digits is 274400, while the sum is 45.

The spelling of 28557077211 in words is "twenty-eight billion, five hundred fifty-seven million, seventy-seven thousand, two hundred eleven".