964647189680 has 480 divisors, whose sum is σ = 2586280181760. Its totient is φ = 333531095040.

The previous prime is 964647189647. The next prime is 964647189689. The reversal of 964647189680 is 86981746469.

It is a self number, because there is not a number n which added to its sum of digits gives 964647189680.

It is not an unprimeable number, because it can be changed into a prime (964647189689) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1626723464 + ... + 1626724056.

It is an arithmetic number, because the mean of its divisors is an integer number (5388083712).

Almost surely, 2^964647189680 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 964647189680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1293140090880).

964647189680 is an abundant number, since it is smaller than the sum of its proper divisors (1621632992080).

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

964647189680 is a wasteful number, since it uses less digits than its factorization.

964647189680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 68.

The spelling of 964647189680 in words is "nine hundred sixty-four billion, six hundred forty-seven million, one hundred eighty-nine thousand, six hundred eighty".