65440895080 has 128 divisors (see below), whose sum is σ = 165252648960. Its totient is φ = 23113728000.

The previous prime is 65440895071. The next prime is 65440895101. The reversal of 65440895080 is 8059804456.

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 31 ways as a sum of consecutive naturals, for example, 10432345 + ... + 10438615.

It is an arithmetic number, because the mean of its divisors is an integer number (1291036320).

Almost surely, 2^65440895080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65440895080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82626324480).

65440895080 is an abundant number, since it is smaller than the sum of its proper divisors (99811753880).

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

65440895080 is a wasteful number, since it uses less digits than its factorization.

65440895080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6971 (or 6967 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 49.

The spelling of 65440895080 in words is "sixty-five billion, four hundred forty million, eight hundred ninety-five thousand, eighty".