8921197489512 has 576 divisors, whose sum is σ = 29003263652160. Its totient is φ = 2277854853120.

The previous prime is 8921197489489. The next prime is 8921197489591. The reversal of 8921197489512 is 2159847911298.

It is a super-2 number, since 2×8921197489512² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 8132358148 + ... + 8132359244.

It is an arithmetic number, because the mean of its divisors is an integer number (50352888285).

Almost surely, 2^{8921197489512} 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 8921197489512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14501631826080).

8921197489512 is an abundant number, since it is smaller than the sum of its proper divisors (20082066162648).

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

8921197489512 is a wasteful number, since it uses less digits than its factorization.

8921197489512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062 (or 2040 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 66.

The spelling of 8921197489512 in words is "eight trillion, nine hundred twenty-one billion, one hundred ninety-seven million, four hundred eighty-nine thousand, five hundred twelve".