64243363824 has 30 divisors (see below), whose sum is σ = 179792192216. Its totient is φ = 21414454560.

The previous prime is 64243363781. The next prime is 64243363829. The reversal of 64243363824 is 42836334246.

It is a happy number.

64243363824 is a `hidden beast` number, since 6 + 4 + 2 + 4 + 3 + 3 + 638 + 2 + 4 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 64243363824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64243363829) 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, 223067092 + ... + 223067379.

Almost surely, 2^64243363824 is an apocalyptic number.

It is an amenable number.

64243363824 is an abundant number, since it is smaller than the sum of its proper divisors (115548828392).

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

64243363824 is a wasteful number, since it uses less digits than its factorization.

64243363824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446134485 (or 446134476 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 45.

The spelling of 64243363824 in words is "sixty-four billion, two hundred forty-three million, three hundred sixty-three thousand, eight hundred twenty-four".