27155284992 has 308 divisors, whose sum is σ = 88814679216. Its totient is φ = 8226385920.

The previous prime is 27155284991. The next prime is 27155285011. The reversal of 27155284992 is 29948255172.

27155284992 is a `hidden beast` number, since 2 + 7 + 1 + 552 + 84 + 9 + 9 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (27155284991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 8209803 + ... + 8213109.

Almost surely, 2^27155284992 is an apocalyptic number.

27155284992 is a gapful number since it is divisible by the number (22) 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 27155284992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44407339608).

27155284992 is an abundant number, since it is smaller than the sum of its proper divisors (61659394224).

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

27155284992 is an equidigital number, since it uses as much as digits as its factorization.

27155284992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3356 (or 3323 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The spelling of 27155284992 in words is "twenty-seven billion, one hundred fifty-five million, two hundred eighty-four thousand, nine hundred ninety-two".