27290634985 has 8 divisors (see below), whose sum is σ = 32753078280. Its totient is φ = 21829630464.

The previous prime is 27290634977. The next prime is 27290634989. The reversal of 27290634985 is 58943609272.

It can be written as a sum of positive squares in 4 ways, for example, as 5392258624 + 21898376361 = 73432^2 + 147981^2 .

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 27290634985 - 2³ = 27290634977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27290634989) 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, 317512 + ... + 394201.

It is an arithmetic number, because the mean of its divisors is an integer number (4094134785).

Almost surely, 2^27290634985 is an apocalyptic number.

It is an amenable number.

27290634985 is a deficient number, since it is larger than the sum of its proper divisors (5462443295).

27290634985 is an equidigital number, since it uses as much as digits as its factorization.

27290634985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719387.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 27290634985 in words is "twenty-seven billion, two hundred ninety million, six hundred thirty-four thousand, nine hundred eighty-five".