27159969512 has 16 divisors (see below), whose sum is σ = 54842246340. Its totient is φ = 12535370496.

The previous prime is 27159969511. The next prime is 27159969587. The reversal of 27159969512 is 21596995172.

It can be written as a sum of positive squares in 2 ways, for example, as 21622526116 + 5537443396 = 147046^2 + 74414^2 .

It is a super-4 number, since 4×27159969512⁴ (a number of 43 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (27159969511) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 130576673 + ... + 130576880.

Almost surely, 2^27159969512 is an apocalyptic number.

It is an amenable number.

27159969512 is an abundant number, since it is smaller than the sum of its proper divisors (27682276828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27159969512 is a wasteful number, since it uses less digits than its factorization.

27159969512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261153572 (or 261153568 counting only the distinct ones).

The product of its digits is 3061800, while the sum is 56.

The spelling of 27159969512 in words is "twenty-seven billion, one hundred fifty-nine million, nine hundred sixty-nine thousand, five hundred twelve".