64505750246720 has 224 divisors, whose sum is σ = 161196032126976. Its totient is φ = 24554924236800.

The previous prime is 64505750246701. The next prime is 64505750246723. The reversal of 64505750246720 is 2764205750546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64505750246723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3362642249 + ... + 3362661431.

It is an arithmetic number, because the mean of its divisors is an integer number (719625143424).

Almost surely, 2^{64505750246720} 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 64505750246720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80598016063488).

64505750246720 is an abundant number, since it is smaller than the sum of its proper divisors (96690281880256).

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

64505750246720 is a wasteful number, since it uses less digits than its factorization.

64505750246720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24849 (or 24839 counting only the distinct ones).

The product of its (nonzero) digits is 14112000, while the sum is 53.

The spelling of 64505750246720 in words is "sixty-four trillion, five hundred five billion, seven hundred fifty million, two hundred forty-six thousand, seven hundred twenty".