27017825642 has 4 divisors (see below), whose sum is σ = 40526738466. Its totient is φ = 13508912820.

The previous prime is 27017825621. The next prime is 27017825663. The reversal of 27017825642 is 24652871072.

It is a Cunningham number, because it is equal to 164371²+1.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (27017825621) and next prime (27017825663).

It can be written as a sum of positive squares in only one way, i.e., 27017825641 + 1 = 164371^2 + 1^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27017825593 and 27017825602.

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 as a sum of consecutive naturals, namely, 6754456409 + ... + 6754456412.

Almost surely, 2^27017825642 is an apocalyptic number.

27017825642 is a deficient number, since it is larger than the sum of its proper divisors (13508912824).

27017825642 is a wasteful number, since it uses less digits than its factorization.

27017825642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13508912823.

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 27017825642 in words is "twenty-seven billion, seventeen million, eight hundred twenty-five thousand, six hundred forty-two".