65027547840 has 112 divisors (see below), whose sum is σ = 206547342048. Its totient is φ = 17333551104.

The previous prime is 65027547833. The next prime is 65027547853. The reversal of 65027547840 is 4874572056.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 65027547840.

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 15 ways as a sum of consecutive naturals, for example, 2572704 + ... + 2597856.

Almost surely, 2^65027547840 is an apocalyptic number.

65027547840 is a gapful number since it is divisible by the number (60) 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 65027547840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103273671024).

65027547840 is an abundant number, since it is smaller than the sum of its proper divisors (141519794208).

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

65027547840 is a wasteful number, since it uses less digits than its factorization.

65027547840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27866 (or 27856 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 48.

The spelling of 65027547840 in words is "sixty-five billion, twenty-seven million, five hundred forty-seven thousand, eight hundred forty".