64463455320 has 128 divisors (see below), whose sum is σ = 223381463040. Its totient is φ = 14708234240.

The previous prime is 64463455307. The next prime is 64463455327. The reversal of 64463455320 is 2355436446.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64463455327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1413912 + ... + 1458791.

It is an arithmetic number, because the mean of its divisors is an integer number (1745167680).

Almost surely, 2^64463455320 is an apocalyptic number.

64463455320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64463455320 is an abundant number, since it is smaller than the sum of its proper divisors (158918007720).

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

64463455320 is a wasteful number, since it uses less digits than its factorization.

64463455320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872745 (or 2872741 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 42.

The spelling of 64463455320 in words is "sixty-four billion, four hundred sixty-three million, four hundred fifty-five thousand, three hundred twenty".