27545448840 has 256 divisors, whose sum is σ = 107689720320. Its totient is φ = 5469880320.

The previous prime is 27545448839. The next prime is 27545448851. The reversal of 27545448840 is 4884454572.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 111450 + ... + 259830.

It is an arithmetic number, because the mean of its divisors is an integer number (420662970).

Almost surely, 2^27545448840 is an apocalyptic number.

27545448840 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 27545448840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53844860160).

27545448840 is an abundant number, since it is smaller than the sum of its proper divisors (80144271480).

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

27545448840 is a wasteful number, since it uses less digits than its factorization.

27545448840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148432 (or 148428 counting only the distinct ones).

The product of its (nonzero) digits is 5734400, while the sum is 51.

The spelling of 27545448840 in words is "twenty-seven billion, five hundred forty-five million, four hundred forty-eight thousand, eight hundred forty".