64334478560 has 96 divisors (see below), whose sum is σ = 171156271104. Its totient is φ = 22639680000.

The previous prime is 64334478557. The next prime is 64334478587. The reversal of 64334478560 is 6587443346.

It is a junction number, because it is equal to n+sod(n) for n = 64334478499 and 64334478508.

It is a congruent number.

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, 535016 + ... + 644135.

It is an arithmetic number, because the mean of its divisors is an integer number (1782877824).

Almost surely, 2^64334478560 is an apocalyptic number.

It is an amenable number.

64334478560 is an abundant number, since it is smaller than the sum of its proper divisors (106821792544).

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

64334478560 is a wasteful number, since it uses less digits than its factorization.

64334478560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179208 (or 1179200 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 50.

The spelling of 64334478560 in words is "sixty-four billion, three hundred thirty-four million, four hundred seventy-eight thousand, five hundred sixty".