64548757872 has 160 divisors (see below), whose sum is σ = 191087452160. Its totient is φ = 20849633280.

The previous prime is 64548757853. The next prime is 64548757879. The reversal of 64548757872 is 27875784546.

It is a happy number.

64548757872 is a `hidden beast` number, since 6 + 4 + 54 + 8 + 7 + 578 + 7 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64548757879) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2345472 + ... + 2372832.

It is an arithmetic number, because the mean of its divisors is an integer number (1194296576).

Almost surely, 2^64548757872 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 64548757872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95543726080).

64548757872 is an abundant number, since it is smaller than the sum of its proper divisors (126538694288).

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

64548757872 is a wasteful number, since it uses less digits than its factorization.

64548757872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27548 (or 27536 counting only the distinct ones).

The product of its digits is 105369600, while the sum is 63.

The spelling of 64548757872 in words is "sixty-four billion, five hundred forty-eight million, seven hundred fifty-seven thousand, eight hundred seventy-two".