28358118657 has 24 divisors (see below), whose sum is σ = 46178515040. Its totient is φ = 17186736600.

The previous prime is 28358118647. The next prime is 28358118673. The reversal of 28358118657 is 75681185382.

28358118657 is a `hidden beast` number, since 2 + 8 + 3 + 581 + 1 + 8 + 6 + 57 = 666.

It is not a de Polignac number, because 28358118657 - 2¹¹ = 28358116609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28358118637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4336819 + ... + 4343352.

Almost surely, 2^28358118657 is an apocalyptic number.

28358118657 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28358118657 is a deficient number, since it is larger than the sum of its proper divisors (17820396383).

28358118657 is a wasteful number, since it uses less digits than its factorization.

28358118657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8680202 (or 8680185 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The spelling of 28358118657 in words is "twenty-eight billion, three hundred fifty-eight million, one hundred eighteen thousand, six hundred fifty-seven".