27681133320 has 128 divisors (see below), whose sum is σ = 97698182400. Its totient is φ = 6947417088.

The previous prime is 27681133297. The next prime is 27681133357. The reversal of 27681133320 is 2333118672.

It is a super-2 number, since 2×27681133320² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 735484 + ... + 772203.

It is an arithmetic number, because the mean of its divisors is an integer number (763267050).

Almost surely, 2^27681133320 is an apocalyptic number.

27681133320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27681133320 is an abundant number, since it is smaller than the sum of its proper divisors (70017049080).

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

27681133320 is a wasteful number, since it uses less digits than its factorization.

27681133320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507724 (or 1507714 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 27681133320 in words is "twenty-seven billion, six hundred eighty-one million, one hundred thirty-three thousand, three hundred twenty".