27720873336 has 128 divisors (see below), whose sum is σ = 81748699200. Its totient is φ = 7750901760.

The previous prime is 27720873287. The next prime is 27720873337. The reversal of 27720873336 is 63337802772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27720873337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63706 + ... + 243926.

Almost surely, 2^27720873336 is an apocalyptic number.

27720873336 is a gapful number since it is divisible by the number (26) 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 27720873336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40874349600).

27720873336 is an abundant number, since it is smaller than the sum of its proper divisors (54027825864).

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

27720873336 is a wasteful number, since it uses less digits than its factorization.

27720873336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180289 (or 180285 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 48.

The spelling of 27720873336 in words is "twenty-seven billion, seven hundred twenty million, eight hundred seventy-three thousand, three hundred thirty-six".