27768006720 has 336 divisors, whose sum is σ = 105529806720. Its totient is φ = 6665945088.

The previous prime is 27768006719. The next prime is 27768006731. The reversal of 27768006720 is 2760086772.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1113751 + ... + 1138409.

Almost surely, 2^27768006720 is an apocalyptic number.

27768006720 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 27768006720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52764903360).

27768006720 is an abundant number, since it is smaller than the sum of its proper divisors (77761800000).

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

27768006720 is a wasteful number, since it uses less digits than its factorization.

27768006720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24722 (or 24709 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The spelling of 27768006720 in words is "twenty-seven billion, seven hundred sixty-eight million, six thousand, seven hundred twenty".