64740349651712 has 576 divisors, whose sum is σ = 163790637373440. Its totient is φ = 24936082440192.

The previous prime is 64740349651667. The next prime is 64740349651759. The reversal of 64740349651712 is 21715694304746.

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 63 ways as a sum of consecutive naturals, for example, 5836138838 + ... + 5836149930.

It is an arithmetic number, because the mean of its divisors is an integer number (284358745440).

Almost surely, 2^{64740349651712} 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 64740349651712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81895318686720).

64740349651712 is an abundant number, since it is smaller than the sum of its proper divisors (99050287721728).

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

64740349651712 is a wasteful number, since it uses less digits than its factorization.

64740349651712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11308 (or 11294 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 64740349651712 in words is "sixty-four trillion, seven hundred forty billion, three hundred forty-nine million, six hundred fifty-one thousand, seven hundred twelve".