834843561378 has 32 divisors (see below), whose sum is σ = 1696314312000. Its totient is φ = 273877592256.

The previous prime is 834843561329. The next prime is 834843561397. The reversal of 834843561378 is 873165348438.

It is a happy number.

It is a super-3 number, since 3×834843561378³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4186176 + ... + 4381067.

It is an arithmetic number, because the mean of its divisors is an integer number (53009822250).

Almost surely, 2^834843561378 is an apocalyptic number.

834843561378 is an abundant number, since it is smaller than the sum of its proper divisors (861470750622).

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

834843561378 is a wasteful number, since it uses less digits than its factorization.

834843561378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8567506.

The product of its digits is 46448640, while the sum is 60.

The spelling of 834843561378 in words is "eight hundred thirty-four billion, eight hundred forty-three million, five hundred sixty-one thousand, three hundred seventy-eight".