1099017131520 has 640 divisors, whose sum is σ = 4638079429632. Its totient is φ = 214931865600.

The previous prime is 1099017131477. The next prime is 1099017131521. The reversal of 1099017131520 is 251317109901.

It is a tau number, because it is divible by the number of its divisors (640).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099017131521) 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 63 ways as a sum of consecutive naturals, for example, 9998460 + ... + 10107780.

Almost surely, 2^{1099017131520} is an apocalyptic number.

1099017131520 is a gapful number since it is divisible by the number (10) 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 1099017131520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2319039714816).

1099017131520 is an abundant number, since it is smaller than the sum of its proper divisors (3539062298112).

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

1099017131520 is a wasteful number, since it uses less digits than its factorization.

1099017131520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109382 (or 109366 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 39.

The spelling of 1099017131520 in words is "one trillion, ninety-nine billion, seventeen million, one hundred thirty-one thousand, five hundred twenty".