27394218880 has 512 divisors, whose sum is σ = 84095262720. Its totient is φ = 8316518400.

The previous prime is 27394218877. The next prime is 27394218889. The reversal of 27394218880 is 8881249372.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27394218889) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 96799219 + ... + 96799501.

It is an arithmetic number, because the mean of its divisors is an integer number (164248560).

Almost surely, 2^27394218880 is an apocalyptic number.

27394218880 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 27394218880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42047631360).

27394218880 is an abundant number, since it is smaller than the sum of its proper divisors (56701043840).

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

27394218880 is a wasteful number, since it uses less digits than its factorization.

27394218880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 27394218880 in words is "twenty-seven billion, three hundred ninety-four million, two hundred eighteen thousand, eight hundred eighty".