28148121603 has 48 divisors (see below), whose sum is σ = 49252769280. Its totient is φ = 15122274048.

The previous prime is 28148121601. The next prime is 28148121649. The reversal of 28148121603 is 30612184182.

28148121603 is a `hidden beast` number, since 2 + 8 + 1 + 48 + 1 + 2 + 1 + 603 = 666.

It is not a de Polignac number, because 28148121603 - 2¹ = 28148121601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28148121601) 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, 1022068 + ... + 1049246.

It is an arithmetic number, because the mean of its divisors is an integer number (1026099360).

Almost surely, 2^28148121603 is an apocalyptic number.

28148121603 is a deficient number, since it is larger than the sum of its proper divisors (21104647677).

28148121603 is a wasteful number, since it uses less digits than its factorization.

28148121603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28176 (or 28173 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 28148121603 in words is "twenty-eight billion, one hundred forty-eight million, one hundred twenty-one thousand, six hundred three".