1969778966848 has 672 divisors, whose sum is σ = 5348644835328. Its totient is φ = 709986816000.

The previous prime is 1969778966843. The next prime is 1969778966893. The reversal of 1969778966848 is 8486698779691.

It is a Harshad number since it is a multiple of its sum of digits (88).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1969778966843) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3766307515 + ... + 3766308037.

Almost surely, 2^{1969778966848} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1969778966848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2674322417664).

1969778966848 is an abundant number, since it is smaller than the sum of its proper divisors (3378865868480).

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

1969778966848 is a wasteful number, since it uses less digits than its factorization.

1969778966848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 714 counting only the distinct ones).

The product of its digits is 15801827328, while the sum is 88.

The spelling of 1969778966848 in words is "one trillion, nine hundred sixty-nine billion, seven hundred seventy-eight million, nine hundred sixty-six thousand, eight hundred forty-eight".