27484982640 has 160 divisors (see below), whose sum is σ = 95007133440. Its totient is φ = 7303267584.

The previous prime is 27484982639. The next prime is 27484982663. The reversal of 27484982640 is 4628948472.

27484982640 is a `hidden beast` number, since 27 + 484 + 9 + 82 + 64 + 0 = 666.

It is a super-2 number, since 2×27484982640² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

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, 588799 + ... + 633761.

It is an arithmetic number, because the mean of its divisors is an integer number (593794584).

Almost surely, 2^27484982640 is an apocalyptic number.

27484982640 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 27484982640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47503566720).

27484982640 is an abundant number, since it is smaller than the sum of its proper divisors (67522150800).

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

27484982640 is a wasteful number, since it uses less digits than its factorization.

27484982640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45268 (or 45256 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The spelling of 27484982640 in words is "twenty-seven billion, four hundred eighty-four million, nine hundred eighty-two thousand, six hundred forty".