64846822768 has 120 divisors (see below), whose sum is σ = 163203075168. Its totient is φ = 24303297024.

The previous prime is 64846822753. The next prime is 64846822829. The reversal of 64846822768 is 86722864846.

It is a super-2 number, since 2×64846822768² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 463930 + ... + 587302.

Almost surely, 2^64846822768 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 64846822768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81601537584).

64846822768 is an abundant number, since it is smaller than the sum of its proper divisors (98356252400).

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

64846822768 is a wasteful number, since it uses less digits than its factorization.

64846822768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123439 (or 123414 counting only the distinct ones).

The product of its digits is 49545216, while the sum is 61.

The spelling of 64846822768 in words is "sixty-four billion, eight hundred forty-six million, eight hundred twenty-two thousand, seven hundred sixty-eight".