64409506000 has 640 divisors, whose sum is σ = 197884477440. Its totient is φ = 19782144000.

The previous prime is 64409505977. The next prime is 64409506009. The reversal of 64409506000 is 60590446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64409506009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 601957947 + ... + 601958053.

It is an arithmetic number, because the mean of its divisors is an integer number (309194496).

Almost surely, 2^64409506000 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 64409506000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98942238720).

64409506000 is an abundant number, since it is smaller than the sum of its proper divisors (133474971440).

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

64409506000 is a wasteful number, since it uses less digits than its factorization.

64409506000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 64409506000 in words is "sixty-four billion, four hundred nine million, five hundred six thousand".