27285953899 has 4 divisors (see below), whose sum is σ = 27291539880. Its totient is φ = 27280367920.

The previous prime is 27285953897. The next prime is 27285953923. The reversal of 27285953899 is 99835958272.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27285953899 - 2¹ = 27285953897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27285953897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2785657 + ... + 2795434.

It is an arithmetic number, because the mean of its divisors is an integer number (6822884970).

Almost surely, 2^27285953899 is an apocalyptic number.

27285953899 is a deficient number, since it is larger than the sum of its proper divisors (5585981).

27285953899 is an equidigital number, since it uses as much as digits as its factorization.

27285953899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5585980.

The product of its digits is 97977600, while the sum is 67.

The spelling of 27285953899 in words is "twenty-seven billion, two hundred eighty-five million, nine hundred fifty-three thousand, eight hundred ninety-nine".