1328651698944 has 144 divisors (see below), whose sum is σ = 3696431083520. Its totient is φ = 423171440640.

The previous prime is 1328651698943. The next prime is 1328651698999. The reversal of 1328651698944 is 4498961568231.

It is a super-2 number, since 2×1328651698944² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1328651698943) 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, 1527624 + ... + 2234040.

Almost surely, 2^{1328651698944} 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 1328651698944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1848215541760).

1328651698944 is an abundant number, since it is smaller than the sum of its proper divisors (2367779384576).

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

1328651698944 is an equidigital number, since it uses as much as digits as its factorization.

1328651698944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706546 (or 706532 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 66.

The spelling of 1328651698944 in words is "one trillion, three hundred twenty-eight billion, six hundred fifty-one million, six hundred ninety-eight thousand, nine hundred forty-four".