64547243712 has 560 divisors, whose sum is σ = 230529587200. Its totient is φ = 17831923200.

The previous prime is 64547243711. The next prime is 64547243749. The reversal of 64547243712 is 21734274546.

64547243712 is a `hidden beast` number, since 64 + 547 + 2 + 4 + 37 + 12 = 666.

It is not an unprimeable number, because it can be changed into a prime (64547243711) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 55120887 + ... + 55122057.

Almost surely, 2^64547243712 is an apocalyptic number.

64547243712 is a gapful number since it is divisible by the number (62) 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 64547243712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115264793600).

64547243712 is an abundant number, since it is smaller than the sum of its proper divisors (165982343488).

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

64547243712 is a wasteful number, since it uses less digits than its factorization.

64547243712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247 (or 1214 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 45.

The spelling of 64547243712 in words is "sixty-four billion, five hundred forty-seven million, two hundred forty-three thousand, seven hundred twelve".