27039318439821 has 16 divisors (see below), whose sum is σ = 36346274078400. Its totient is φ = 17879428760960.

The previous prime is 27039318439817. The next prime is 27039318439867. The reversal of 27039318439821 is 12893481393072.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 27039318439821 - 2² = 27039318439817 is a prime.

It is a super-2 number, since 2×27039318439821² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27039318439121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16884720 + ... + 18416633.

It is an arithmetic number, because the mean of its divisors is an integer number (2271642129900).

Almost surely, 2^{27039318439821} is an apocalyptic number.

It is an amenable number.

27039318439821 is a deficient number, since it is larger than the sum of its proper divisors (9306955638579).

27039318439821 is a wasteful number, since it uses less digits than its factorization.

27039318439821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35303436.

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 27039318439821 in words is "twenty-seven trillion, thirty-nine billion, three hundred eighteen million, four hundred thirty-nine thousand, eight hundred twenty-one".