64850719536 has 240 divisors, whose sum is σ = 197383080960. Its totient is φ = 19800668160.

The previous prime is 64850719511. The next prime is 64850719559. The reversal of 64850719536 is 63591705846.

64850719536 is a `hidden beast` number, since 6 + 48 + 50 + 7 + 19 + 536 = 666.

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 47 ways as a sum of consecutive naturals, for example, 13728471 + ... + 13733193.

It is an arithmetic number, because the mean of its divisors is an integer number (822429504).

Almost surely, 2^64850719536 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 64850719536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98691540480).

64850719536 is an abundant number, since it is smaller than the sum of its proper divisors (132532361424).

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

64850719536 is a wasteful number, since it uses less digits than its factorization.

64850719536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4904 (or 4895 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 64850719536 in words is "sixty-four billion, eight hundred fifty million, seven hundred nineteen thousand, five hundred thirty-six".