27151459729 has 9 divisors (see below), whose sum is σ = 27682321233. Its totient is φ = 26630599632.

The previous prime is 27151459721. The next prime is 27151459763. The reversal of 27151459729 is 92795415172.

The square root of 27151459729 is 164777.

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

It can be written as a sum of positive squares in 4 ways, for example, as 402203025 + 26749256704 = 20055^2 + 163552^2 .

It is not a de Polignac number, because 27151459729 - 2³ = 27151459721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27151459721) 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, 8731627 + ... + 8734735.

Almost surely, 2^27151459729 is an apocalyptic number.

27151459729 is the 164777-th square number.

27151459729 is the 82389-th centered octagonal number.

It is an amenable number.

27151459729 is a deficient number, since it is larger than the sum of its proper divisors (530861504).

27151459729 is an frugal number, since it uses more digits than its factorization.

27151459729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6324 (or 3162 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 52.

The spelling of 27151459729 in words is "twenty-seven billion, one hundred fifty-one million, four hundred fifty-nine thousand, seven hundred twenty-nine".