9857688698880 has 2048 divisors, whose sum is σ = 40301445542400. Its totient is φ = 2293235712000.

The previous prime is 9857688698873. The next prime is 9857688698911. The reversal of 9857688698880 is 888968867589.

It is a tau number, because it is divible by the number of its divisors (2048).

It is a Harshad number since it is a multiple of its sum of digits (90).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 161601454050 + ... + 161601454110.

Almost surely, 2^{9857688698880} is an apocalyptic number.

9857688698880 is a gapful number since it is divisible by the number (90) 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 9857688698880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20150722771200).

9857688698880 is an abundant number, since it is smaller than the sum of its proper divisors (30443756843520).

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

9857688698880 is an frugal number, since it uses more digits than its factorization.

9857688698880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 26754416640, while the sum is 90.

The spelling of 9857688698880 in words is "nine trillion, eight hundred fifty-seven billion, six hundred eighty-eight million, six hundred ninety-eight thousand, eight hundred eighty".