64230819844 has 9 divisors (see below), whose sum is σ = 112404821767. Its totient is φ = 32115156484.

The previous prime is 64230819827. The next prime is 64230819847. The reversal of 64230819844 is 44891803246.

The square root of 64230819844 is 253438.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64230819847) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 443517 + ... + 570235.

Almost surely, 2^64230819844 is an apocalyptic number.

64230819844 is the 253438-th square number.

It is an amenable number.

64230819844 is a deficient number, since it is larger than the sum of its proper divisors (48174001923).

64230819844 is an frugal number, since it uses more digits than its factorization.

64230819844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253442 (or 126721 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 49.

Multiplying 64230819844 by its sum of digits (49), we get a square (3147310172356 = 1774066²).

The spelling of 64230819844 in words is "sixty-four billion, two hundred thirty million, eight hundred nineteen thousand, eight hundred forty-four".