28357845155 has 24 divisors (see below), whose sum is σ = 34783109088. Its totient is φ = 22192569216.

The previous prime is 28357845133. The next prime is 28357845161. The reversal of 28357845155 is 55154875382.

It is not a de Polignac number, because 28357845155 - 2⁶ = 28357845091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28357845097 and 28357845106.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3543839 + ... + 3551831.

It is an arithmetic number, because the mean of its divisors is an integer number (1449296212).

Almost surely, 2^28357845155 is an apocalyptic number.

28357845155 is a deficient number, since it is larger than the sum of its proper divisors (6425263933).

28357845155 is an equidigital number, since it uses as much as digits as its factorization.

28357845155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8267 (or 8184 counting only the distinct ones).

The product of its digits is 6720000, while the sum is 53.

The spelling of 28357845155 in words is "twenty-eight billion, three hundred fifty-seven million, eight hundred forty-five thousand, one hundred fifty-five".