64331279200 has 144 divisors (see below), whose sum is σ = 167581930320. Its totient is φ = 24043806720.

The previous prime is 64331279123. The next prime is 64331279209. The reversal of 64331279200 is 297213346.

It is a self number, because there is not a number n which added to its sum of digits gives 64331279200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64331279209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1080612 + ... + 1138588.

It is an arithmetic number, because the mean of its divisors is an integer number (1163763405).

Almost surely, 2^64331279200 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 64331279200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83790965160).

64331279200 is an abundant number, since it is smaller than the sum of its proper divisors (103250651120).

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

64331279200 is a wasteful number, since it uses less digits than its factorization.

64331279200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58089 (or 58076 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 64331279200 in words is "sixty-four billion, three hundred thirty-one million, two hundred seventy-nine thousand, two hundred".