27788056128000 has 2560 divisors, whose sum is σ = 124702318540800. Its totient is φ = 5964005376000.

The previous prime is 27788056127989. The next prime is 27788056128047. The reversal of 27788056128000 is 82165088772.

27788056128000 is a `hidden beast` number, since 2 + 7 + 78 + 8 + 0 + 561 + 2 + 8 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2560).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 12979006930 + ... + 12979009070.

It is an arithmetic number, because the mean of its divisors is an integer number (48711843180).

Almost surely, 2^{27788056128000} is an apocalyptic number.

27788056128000 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 27788056128000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62351159270400).

27788056128000 is an abundant number, since it is smaller than the sum of its proper divisors (96914262412800).

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

27788056128000 is a wasteful number, since it uses less digits than its factorization.

27788056128000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256 (or 2224 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The spelling of 27788056128000 in words is "twenty-seven trillion, seven hundred eighty-eight billion, fifty-six million, one hundred twenty-eight thousand".