8898997328640 has 216 divisors, whose sum is σ = 30842988347808. Its totient is φ = 2368951418880.

The previous prime is 8898997328561. The next prime is 8898997328647. The reversal of 8898997328640 is 468237998988.

8898997328640 is a `hidden beast` number, since 88 + 98 + 9 + 97 + 328 + 6 + 40 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 8898997328640.

It is not an unprimeable number, because it can be changed into a prime (8898997328647) 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 23 ways as a sum of consecutive naturals, for example, 5977645 + ... + 7316435.

Almost surely, 2^{8898997328640} is an apocalyptic number.

8898997328640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8898997328640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15421494173904).

8898997328640 is an abundant number, since it is smaller than the sum of its proper divisors (21943991019168).

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

8898997328640 is a wasteful number, since it uses less digits than its factorization.

8898997328640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339395 (or 1339378 counting only the distinct ones).

The product of its (nonzero) digits is 3009871872, while the sum is 81.

The spelling of 8898997328640 in words is "eight trillion, eight hundred ninety-eight billion, nine hundred ninety-seven million, three hundred twenty-eight thousand, six hundred forty".