27257717513 has 8 divisors (see below), whose sum is σ = 29355970056. Its totient is φ = 25159680000.

The previous prime is 27257717489. The next prime is 27257717549. The reversal of 27257717513 is 31571775272.

It can be written as a sum of positive squares in 4 ways, for example, as 16341020224 + 10916697289 = 127832^2 + 104483^2 .

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

It is not a de Polignac number, because 27257717513 - 2¹⁰ = 27257716489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27257717573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291863 + ... + 373763.

It is an arithmetic number, because the mean of its divisors is an integer number (3669496257).

Almost surely, 2^27257717513 is an apocalyptic number.

It is an amenable number.

27257717513 is a deficient number, since it is larger than the sum of its proper divisors (2098252543).

27257717513 is a wasteful number, since it uses less digits than its factorization.

27257717513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107515.

The product of its digits is 720300, while the sum is 47.

The spelling of 27257717513 in words is "twenty-seven billion, two hundred fifty-seven million, seven hundred seventeen thousand, five hundred thirteen".