28682643545 has 8 divisors (see below), whose sum is σ = 34903949760. Its totient is φ = 22622929840.

The previous prime is 28682643541. The next prime is 28682643547. The reversal of 28682643545 is 54534628682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28682643545 - 2² = 28682643541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28682643541) 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 7 ways as a sum of consecutive naturals, for example, 40397735 + ... + 40398444.

It is an arithmetic number, because the mean of its divisors is an integer number (4362993720).

Almost surely, 2^28682643545 is an apocalyptic number.

It is an amenable number.

28682643545 is a deficient number, since it is larger than the sum of its proper divisors (6221306215).

28682643545 is an equidigital number, since it uses as much as digits as its factorization.

28682643545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80796255.

The product of its digits is 11059200, while the sum is 53.

The spelling of 28682643545 in words is "twenty-eight billion, six hundred eighty-two million, six hundred forty-three thousand, five hundred forty-five".