64927267722240 has 4224 divisors, whose sum is σ = 292389733171200. Its totient is φ = 11982156595200.

The previous prime is 64927267722217. The next prime is 64927267722283. The reversal of 64927267722240 is 4222776272946.

It is a tau number, because it is divible by the number of its divisors (4224).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 283525186446 + ... + 283525186674.

Almost surely, 2^{64927267722240} is an apocalyptic number.

64927267722240 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 64927267722240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146194866585600).

64927267722240 is an abundant number, since it is smaller than the sum of its proper divisors (227462465448960).

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

64927267722240 is a wasteful number, since it uses less digits than its factorization.

64927267722240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 56899584, while the sum is 60.

The spelling of 64927267722240 in words is "sixty-four trillion, nine hundred twenty-seven billion, two hundred sixty-seven million, seven hundred twenty-two thousand, two hundred forty".