64441895472 has 30 divisors (see below), whose sum is σ = 180347805092. Its totient is φ = 21480631776.

The previous prime is 64441895459. The next prime is 64441895477. The reversal of 64441895472 is 27459814446.

64441895472 is a `hidden beast` number, since 6 + 4 + 441 + 89 + 54 + 72 = 666.

It is not an unprimeable number, because it can be changed into a prime (64441895477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 223756438 + ... + 223756725.

Almost surely, 2^64441895472 is an apocalyptic number.

It is an amenable number.

64441895472 is an abundant number, since it is smaller than the sum of its proper divisors (115905909620).

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

64441895472 is a wasteful number, since it uses less digits than its factorization.

64441895472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447513177 (or 447513168 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The spelling of 64441895472 in words is "sixty-four billion, four hundred forty-one million, eight hundred ninety-five thousand, four hundred seventy-two".