27155298240 has 504 divisors, whose sum is σ = 109165625712. Its totient is φ = 6177669120.

The previous prime is 27155298229. The next prime is 27155298257. The reversal of 27155298240 is 4289255172.

27155298240 is a `hidden beast` number, since 2 + 7 + 1 + 5 + 529 + 82 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 47557155 + ... + 47557725.

Almost surely, 2^27155298240 is an apocalyptic number.

27155298240 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 27155298240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54582812856).

27155298240 is an abundant number, since it is smaller than the sum of its proper divisors (82010327472).

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

27155298240 is a wasteful number, since it uses less digits than its factorization.

27155298240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 925 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 27155298240 in words is "twenty-seven billion, one hundred fifty-five million, two hundred ninety-eight thousand, two hundred forty".