27516253889 has 8 divisors (see below), whose sum is σ = 28511544360. Its totient is φ = 26524060416.

The previous prime is 27516253861. The next prime is 27516253901. The reversal of 27516253889 is 98835261572.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23961025 + 27492292864 = 4895^2 + 165808^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27516253889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27516253859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 756152 + ... + 791705.

It is an arithmetic number, because the mean of its divisors is an integer number (3563943045).

Almost surely, 2^27516253889 is an apocalyptic number.

27516253889 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

27516253889 is a deficient number, since it is larger than the sum of its proper divisors (995290471).

27516253889 is a wasteful number, since it uses less digits than its factorization.

27516253889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548499.

The product of its digits is 7257600, while the sum is 56.

The spelling of 27516253889 in words is "twenty-seven billion, five hundred sixteen million, two hundred fifty-three thousand, eight hundred eighty-nine".