65440710415080 has 2304 divisors, whose sum is σ = 291983476861440. Its totient is φ = 12367620587520.

The previous prime is 65440710415043. The next prime is 65440710415139. The reversal of 65440710415080 is 8051401704456.

65440710415080 is a `hidden beast` number, since 6 + 5 + 4 + 407 + 10 + 4 + 150 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 117487810162 + ... + 117487810718.

It is an arithmetic number, because the mean of its divisors is an integer number (126728939610).

Almost surely, 2^{65440710415080} is an apocalyptic number.

65440710415080 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 65440710415080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145991738430720).

65440710415080 is an abundant number, since it is smaller than the sum of its proper divisors (226542766446360).

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

65440710415080 is a wasteful number, since it uses less digits than its factorization.

65440710415080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 65440710415080 in words is "sixty-five trillion, four hundred forty billion, seven hundred ten million, four hundred fifteen thousand, eighty".