64864484016 has 80 divisors (see below), whose sum is σ = 169290950400. Its totient is φ = 21399240960.

The previous prime is 64864483973. The next prime is 64864484029. The reversal of 64864484016 is 61048446846.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 64864484016.

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 15 ways as a sum of consecutive naturals, for example, 13341426 + ... + 13346286.

It is an arithmetic number, because the mean of its divisors is an integer number (2116136880).

Almost surely, 2^64864484016 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 64864484016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84645475200).

64864484016 is an abundant number, since it is smaller than the sum of its proper divisors (104426466384).

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

64864484016 is a wasteful number, since it uses less digits than its factorization.

64864484016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7674 (or 7668 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 51.

The spelling of 64864484016 in words is "sixty-four billion, eight hundred sixty-four million, four hundred eighty-four thousand, sixteen".