28135208675 has 48 divisors (see below), whose sum is σ = 42244706880. Its totient is φ = 18145935360.

The previous prime is 28135208659. The next prime is 28135208693. The reversal of 28135208675 is 57680253182.

It is not a de Polignac number, because 28135208675 - 2⁴ = 28135208659 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7998017 + ... + 8001533.

It is an arithmetic number, because the mean of its divisors is an integer number (880098060).

Almost surely, 2^28135208675 is an apocalyptic number.

28135208675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28135208675 is a deficient number, since it is larger than the sum of its proper divisors (14109498205).

28135208675 is a wasteful number, since it uses less digits than its factorization.

28135208675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6240 (or 6235 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 28135208675 in words is "twenty-eight billion, one hundred thirty-five million, two hundred eight thousand, six hundred seventy-five".