193778782912 has 224 divisors, whose sum is σ = 479960147520. Its totient is φ = 76262277120.

The previous prime is 193778782877. The next prime is 193778782919. The reversal of 193778782912 is 219287877391.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is not an unprimeable number, because it can be changed into a prime (193778782919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49318164 + ... + 49322092.

It is an arithmetic number, because the mean of its divisors is an integer number (2142679230).

Almost surely, 2^193778782912 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 193778782912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239980073760).

193778782912 is an abundant number, since it is smaller than the sum of its proper divisors (286181364608).

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

193778782912 is a wasteful number, since it uses less digits than its factorization.

193778782912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4299 (or 4289 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 64.

The spelling of 193778782912 in words is "one hundred ninety-three billion, seven hundred seventy-eight million, seven hundred eighty-two thousand, nine hundred twelve".