27678692860 has 192 divisors, whose sum is σ = 75848048640. Its totient is φ = 8247536640.

The previous prime is 27678692849. The next prime is 27678692869. The reversal of 27678692860 is 6829687672.

It is a super-2 number, since 2×27678692860² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27678692869) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2080911 + ... + 2094169.

It is an arithmetic number, because the mean of its divisors is an integer number (395041920).

Almost surely, 2^27678692860 is an apocalyptic number.

27678692860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27678692860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37924024320).

27678692860 is an abundant number, since it is smaller than the sum of its proper divisors (48169355780).

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

27678692860 is a wasteful number, since it uses less digits than its factorization.

27678692860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13356 (or 13354 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 61.

The spelling of 27678692860 in words is "twenty-seven billion, six hundred seventy-eight million, six hundred ninety-two thousand, eight hundred sixty".