27681708370 has 8 divisors (see below), whose sum is σ = 49827075084. Its totient is φ = 11072683344.

The previous prime is 27681708367. The next prime is 27681708391. The reversal of 27681708370 is 7380718672.

It can be written as a sum of positive squares in 2 ways, for example, as 25260969969 + 2420738401 = 158937^2 + 49201^2 .

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

It is an unprimeable number.

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, 1384085409 + ... + 1384085428.

Almost surely, 2^27681708370 is an apocalyptic number.

27681708370 is a deficient number, since it is larger than the sum of its proper divisors (22145366714).

27681708370 is a wasteful number, since it uses less digits than its factorization.

27681708370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768170844.

The product of its (nonzero) digits is 790272, while the sum is 49.

The spelling of 27681708370 in words is "twenty-seven billion, six hundred eighty-one million, seven hundred eight thousand, three hundred seventy".