8610987797520 has 320 divisors, whose sum is σ = 29036834856960. Its totient is φ = 2102953881600.

The previous prime is 8610987797497. The next prime is 8610987797579. The reversal of 8610987797520 is 257977890168.

It is a super-2 number, since 2×8610987797520² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 132421815 + ... + 132486825.

It is an arithmetic number, because the mean of its divisors is an integer number (90740108928).

Almost surely, 2^{8610987797520} is an apocalyptic number.

8610987797520 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 8610987797520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14518417428480).

8610987797520 is an abundant number, since it is smaller than the sum of its proper divisors (20425847059440).

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

8610987797520 is a wasteful number, since it uses less digits than its factorization.

8610987797520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66014 (or 66008 counting only the distinct ones).

The product of its (nonzero) digits is 106686720, while the sum is 69.

The spelling of 8610987797520 in words is "eight trillion, six hundred ten billion, nine hundred eighty-seven million, seven hundred ninety-seven thousand, five hundred twenty".