28028053257777 has 12 divisors (see below), whose sum is σ = 40526659923984. Its totient is φ = 18666125404440.

The previous prime is 28028053257731. The next prime is 28028053257833. The reversal of 28028053257777 is 77775235082082.

28028053257777 is a `hidden beast` number, since 2 + 8 + 0 + 2 + 8 + 0 + 53 + 2 + 577 + 7 + 7 = 666.

It is not a de Polignac number, because 28028053257777 - 2¹⁸ = 28028052995633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28028053217777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1603610283 + ... + 1603627760.

It is an arithmetic number, because the mean of its divisors is an integer number (3377221660332).

Almost surely, 2^{28028053257777} is an apocalyptic number.

It is an amenable number.

28028053257777 is a deficient number, since it is larger than the sum of its proper divisors (12498606666207).

28028053257777 is a wasteful number, since it uses less digits than its factorization.

28028053257777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207239020 (or 3207239017 counting only the distinct ones).

The product of its (nonzero) digits is 92198400, while the sum is 63.

The spelling of 28028053257777 in words is "twenty-eight trillion, twenty-eight billion, fifty-three million, two hundred fifty-seven thousand, seven hundred seventy-seven".