28548245961 has 10 divisors (see below), whose sum is σ = 42646145322. Its totient is φ = 19032163920.

The previous prime is 28548245953. The next prime is 28548245963. The reversal of 28548245961 is 16954284582.

28548245961 is a `hidden beast` number, since 2 + 8 + 5 + 48 + 2 + 4 + 596 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24780741561 + 3767504400 = 157419^2 + 61380^2 .

It is not a de Polignac number, because 28548245961 - 2³ = 28548245953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28548245898 and 28548245907.

It is not an unprimeable number, because it can be changed into a prime (28548245963) 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 9 ways as a sum of consecutive naturals, for example, 176223660 + ... + 176223821.

Almost surely, 2^28548245961 is an apocalyptic number.

It is an amenable number.

28548245961 is a deficient number, since it is larger than the sum of its proper divisors (14097899361).

28548245961 is an equidigital number, since it uses as much as digits as its factorization.

28548245961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352447493 (or 352447484 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The spelling of 28548245961 in words is "twenty-eight billion, five hundred forty-eight million, two hundred forty-five thousand, nine hundred sixty-one".