64963381200 has 240 divisors, whose sum is σ = 215533633536. Its totient is φ = 16715148800.

The previous prime is 64963381193. The next prime is 64963381229. The reversal of 64963381200 is 218336946.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3996289 + ... + 4012511.

Almost surely, 2^64963381200 is an apocalyptic number.

64963381200 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 64963381200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107766816768).

64963381200 is an abundant number, since it is smaller than the sum of its proper divisors (150570252336).

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

64963381200 is a wasteful number, since it uses less digits than its factorization.

64963381200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16362 (or 16351 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 64963381200 in words is "sixty-four billion, nine hundred sixty-three million, three hundred eighty-one thousand, two hundred".