64263263520 has 192 divisors, whose sum is σ = 208297305216. Its totient is φ = 16641884160.

The previous prime is 64263263509. The next prime is 64263263527. The reversal of 64263263520 is 2536236246.

64263263520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (64263263527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10137792 + ... + 10144128.

It is an arithmetic number, because the mean of its divisors is an integer number (1084881798).

Almost surely, 2^64263263520 is an apocalyptic number.

64263263520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64263263520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104148652608).

64263263520 is an abundant number, since it is smaller than the sum of its proper divisors (144034041696).

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

64263263520 is a wasteful number, since it uses less digits than its factorization.

64263263520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6963 (or 6955 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 39.

Adding to 64263263520 its reverse (2536236246), we get a palindrome (66799499766).

The spelling of 64263263520 in words is "sixty-four billion, two hundred sixty-three million, two hundred sixty-three thousand, five hundred twenty".