27685073388 has 192 divisors, whose sum is σ = 77392465920. Its totient is φ = 7539049728.

The previous prime is 27685073371. The next prime is 27685073419. The reversal of 27685073388 is 88337058672.

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 in 63 ways as a sum of consecutive naturals, for example, 34736206 + ... + 34737002.

It is an arithmetic number, because the mean of its divisors is an integer number (403085760).

Almost surely, 2^27685073388 is an apocalyptic number.

27685073388 is a gapful number since it is divisible by the number (28) 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 27685073388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38696232960).

27685073388 is an abundant number, since it is smaller than the sum of its proper divisors (49707392532).

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

27685073388 is a wasteful number, since it uses less digits than its factorization.

27685073388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076 (or 1074 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 57.

The spelling of 27685073388 in words is "twenty-seven billion, six hundred eighty-five million, seventy-three thousand, three hundred eighty-eight".