17964966648 has 64 divisors (see below), whose sum is σ = 47601216000. Its totient is φ = 5630510592.

The previous prime is 17964966641. The next prime is 17964966653. The reversal of 17964966648 is 84666946971.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17964966641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402723 + ... + 445101.

It is an arithmetic number, because the mean of its divisors is an integer number (743769000).

Almost surely, 2^17964966648 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 17964966648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23800608000).

17964966648 is an abundant number, since it is smaller than the sum of its proper divisors (29636249352).

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

17964966648 is a wasteful number, since it uses less digits than its factorization.

17964966648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43444 (or 43440 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 66.

The spelling of 17964966648 in words is "seventeen billion, nine hundred sixty-four million, nine hundred sixty-six thousand, six hundred forty-eight".