64425455244 has 96 divisors (see below), whose sum is σ = 170894062080. Its totient is φ = 20982888000.

The previous prime is 64425455233. The next prime is 64425455261. The reversal of 64425455244 is 44255452446.

64425455244 is a `hidden beast` number, since 6 + 4 + 4 + 2 + 54 + 552 + 44 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 64425455244.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 962407 + ... + 1027169.

It is an arithmetic number, because the mean of its divisors is an integer number (1780146480).

Almost surely, 2^64425455244 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 64425455244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85447031040).

64425455244 is an abundant number, since it is smaller than the sum of its proper divisors (106468606836).

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

64425455244 is a wasteful number, since it uses less digits than its factorization.

64425455244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64988 (or 64980 counting only the distinct ones).

The product of its digits is 3072000, while the sum is 45.

The spelling of 64425455244 in words is "sixty-four billion, four hundred twenty-five million, four hundred fifty-five thousand, two hundred forty-four".