27672712505 has 8 divisors (see below), whose sum is σ = 33208211400. Its totient is φ = 22137532416.

The previous prime is 27672712481. The next prime is 27672712531. The reversal of 27672712505 is 50521727672.

It can be written as a sum of positive squares in 4 ways, for example, as 2828963344 + 24843749161 = 53188^2 + 157619^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 27672712505 - 2²² = 27668518201 is a prime.

It is an unprimeable number.

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, 201401 + ... + 309689.

It is an arithmetic number, because the mean of its divisors is an integer number (4151026425).

Almost surely, 2^27672712505 is an apocalyptic number.

It is an amenable number.

27672712505 is a deficient number, since it is larger than the sum of its proper divisors (5535498895).

27672712505 is a wasteful number, since it uses less digits than its factorization.

27672712505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159403.

The product of its (nonzero) digits is 411600, while the sum is 44.

The spelling of 27672712505 in words is "twenty-seven billion, six hundred seventy-two million, seven hundred twelve thousand, five hundred five".