28148803475 has 12 divisors (see below), whose sum is σ = 37589479536. Its totient is φ = 20786808480.

The previous prime is 28148803457. The next prime is 28148803477. The reversal of 28148803475 is 57430884182.

It is a de Polignac number, because none of the positive numbers 2^k-28148803475 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28148803477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43305527 + ... + 43306176.

It is an arithmetic number, because the mean of its divisors is an integer number (3132456628).

Almost surely, 2^28148803475 is an apocalyptic number.

28148803475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28148803475 is a deficient number, since it is larger than the sum of its proper divisors (9440676061).

28148803475 is a wasteful number, since it uses less digits than its factorization.

28148803475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86611726 (or 86611721 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 50.

The spelling of 28148803475 in words is "twenty-eight billion, one hundred forty-eight million, eight hundred three thousand, four hundred seventy-five".