27450856489 has 9 divisors (see below), whose sum is σ = 31933978167. Its totient is φ = 23528311464.

The previous prime is 27450856463. The next prime is 27450856493. The reversal of 27450856489 is 98465805472.

The square root of 27450856489 is 165683.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 9425108889 + 18025747600 = 97083^2 + 134260^2 .

It is not a de Polignac number, because 27450856489 - 2⁷ = 27450856361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27450856439) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1147947 + ... + 1171615.

Almost surely, 2^27450856489 is an apocalyptic number.

27450856489 is the 165683-rd square number.

27450856489 is the 82842-nd centered octagonal number.

It is an amenable number.

27450856489 is a deficient number, since it is larger than the sum of its proper divisors (4483121678).

27450856489 is an frugal number, since it uses more digits than its factorization.

27450856489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47352 (or 23676 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 58.

The spelling of 27450856489 in words is "twenty-seven billion, four hundred fifty million, eight hundred fifty-six thousand, four hundred eighty-nine".