1299033209808 has 320 divisors, whose sum is σ = 4083167232000. Its totient is φ = 393811531776.

The previous prime is 1299033209807. The next prime is 1299033209819. The reversal of 1299033209808 is 8089023309921.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299033209807) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27244453 + ... + 27292091.

It is an arithmetic number, because the mean of its divisors is an integer number (12759897600).

Almost surely, 2^{1299033209808} is an apocalyptic number.

1299033209808 is a gapful number since it is divisible by the number (18) 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 1299033209808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2041583616000).

1299033209808 is an abundant number, since it is smaller than the sum of its proper divisors (2784134022192).

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

1299033209808 is a wasteful number, since it uses less digits than its factorization.

1299033209808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47799 (or 47787 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 1299033209808 in words is "one trillion, two hundred ninety-nine billion, thirty-three million, two hundred nine thousand, eight hundred eight".