27728842475 has 12 divisors (see below), whose sum is σ = 35313056784. Its totient is φ = 21583530720.

The previous prime is 27728842469. The next prime is 27728842499. The reversal of 27728842475 is 57424882772.

It is not a de Polignac number, because 27728842475 - 2⁶ = 27728842411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27728842475.

It is an unprimeable number.

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, 14987639 + ... + 14989488.

It is an arithmetic number, because the mean of its divisors is an integer number (2942754732).

Almost surely, 2^27728842475 is an apocalyptic number.

27728842475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27728842475 is a deficient number, since it is larger than the sum of its proper divisors (7584214309).

27728842475 is a wasteful number, since it uses less digits than its factorization.

27728842475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29977174 (or 29977169 counting only the distinct ones).

The product of its digits is 14049280, while the sum is 56.

The spelling of 27728842475 in words is "twenty-seven billion, seven hundred twenty-eight million, eight hundred forty-two thousand, four hundred seventy-five".