1099997368512 has 336 divisors, whose sum is σ = 3536770159872. Its totient is φ = 300280780800.

The previous prime is 1099997368501. The next prime is 1099997368513. The reversal of 1099997368512 is 2158637999901.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (69).

It is not an unprimeable number, because it can be changed into a prime (1099997368513) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 236505387 + ... + 236510037.

Almost surely, 2^{1099997368512} is an apocalyptic number.

1099997368512 is a gapful number since it is divisible by the number (12) 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 1099997368512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1768385079936).

1099997368512 is an abundant number, since it is smaller than the sum of its proper divisors (2436772791360).

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

1099997368512 is a wasteful number, since it uses less digits than its factorization.

1099997368512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5796 (or 5779 counting only the distinct ones).

The product of its (nonzero) digits is 66134880, while the sum is 69.

The spelling of 1099997368512 in words is "one trillion, ninety-nine billion, nine hundred ninety-seven million, three hundred sixty-eight thousand, five hundred twelve".