27751861085 has 8 divisors (see below), whose sum is σ = 35863943640. Its totient is φ = 20493681984.

The previous prime is 27751860991. The next prime is 27751861091. The reversal of 27751861085 is 58016815772.

It can be written as a sum of positive squares in 4 ways, for example, as 626100484 + 27125760601 = 25022^2 + 164699^2 .

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 27751861085 - 2¹⁶ = 27751795549 is a prime.

It is a super-2 number, since 2×27751861085² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213475790 + ... + 213475919.

It is an arithmetic number, because the mean of its divisors is an integer number (4482992955).

Almost surely, 2^27751861085 is an apocalyptic number.

It is an amenable number.

27751861085 is a deficient number, since it is larger than the sum of its proper divisors (8112082555).

27751861085 is a wasteful number, since it uses less digits than its factorization.

27751861085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426951727.

The product of its (nonzero) digits is 940800, while the sum is 50.

The spelling of 27751861085 in words is "twenty-seven billion, seven hundred fifty-one million, eight hundred sixty-one thousand, eighty-five".