64441853316 has 81 divisors (see below), whose sum is σ = 169259285559. Its totient is φ = 21466909656.

The previous prime is 64441853299. The next prime is 64441853339. The reversal of 64441853316 is 61335814446.

The square root of 64441853316 is 253854.

It is a perfect power (a square), and thus also a powerful number.

64441853316 is a `hidden beast` number, since 64 + 4 + 41 + 8 + 533 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (81).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 41123565 + ... + 41125131.

Almost surely, 2^64441853316 is an apocalyptic number.

64441853316 is the 253854-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64441853316

64441853316 is an abundant number, since it is smaller than the sum of its proper divisors (104817432243).

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

64441853316 is an frugal number, since it uses more digits than its factorization.

64441853316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162 (or 1572 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 64441853316 in words is "sixty-four billion, four hundred forty-one million, eight hundred fifty-three thousand, three hundred sixteen".