27039481656 has 64 divisors (see below), whose sum is σ = 73760094720. Its totient is φ = 8191998720.

The previous prime is 27039481603. The next prime is 27039481691. The reversal of 27039481656 is 65618493072.

It is a super-2 number, since 2×27039481656² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27039481599 and 27039481608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1700961 + ... + 1716783.

It is an arithmetic number, because the mean of its divisors is an integer number (1152501480).

It is a 2-persistent number, because it is pandigital, and so is 2⋅27039481656 = 54078963312, but 3⋅27039481656 = 81118444968 is not.

Almost surely, 2^27039481656 is an apocalyptic number.

27039481656 is the 94938-th octagonal number.

It is an amenable number.

27039481656 is an abundant number, since it is smaller than the sum of its proper divisors (46720613064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27039481656 is a wasteful number, since it uses less digits than its factorization.

27039481656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22316 (or 22312 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 27039481656 in words is "twenty-seven billion, thirty-nine million, four hundred eighty-one thousand, six hundred fifty-six".