1299969363798 has 128 divisors (see below), whose sum is σ = 3397499043840. Its totient is φ = 360741682080.

The previous prime is 1299969363779. The next prime is 1299969363811. The reversal of 1299969363798 is 8973639699921.

1299969363798 is a `hidden beast` number, since 1 + 29 + 99 + 69 + 363 + 7 + 98 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2048065 + ... + 2606627.

It is an arithmetic number, because the mean of its divisors is an integer number (26542961280).

Almost surely, 2^{1299969363798} is an apocalyptic number.

1299969363798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1299969363798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698749521920).

1299969363798 is an abundant number, since it is smaller than the sum of its proper divisors (2097529680042).

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

1299969363798 is a wasteful number, since it uses less digits than its factorization.

1299969363798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558759 (or 558753 counting only the distinct ones).

The product of its digits is 2142770112, while the sum is 81.

The spelling of 1299969363798 in words is "one trillion, two hundred ninety-nine billion, nine hundred sixty-nine million, three hundred sixty-three thousand, seven hundred ninety-eight".