834004770985 has 4 divisors (see below), whose sum is σ = 1000805725188. Its totient is φ = 667203816784.

The previous prime is 834004770983. The next prime is 834004771037. The reversal of 834004770985 is 589077400438.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 634686275584 + 199318495401 = 796672^2 + 446451^2 .

It is a cyclic number.

It is not a de Polignac number, because 834004770985 - 2¹ = 834004770983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (834004770983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83400477094 + ... + 83400477103.

It is an arithmetic number, because the mean of its divisors is an integer number (250201431297).

Almost surely, 2^834004770985 is an apocalyptic number.

It is an amenable number.

834004770985 is a deficient number, since it is larger than the sum of its proper divisors (166800954203).

834004770985 is a wasteful number, since it uses less digits than its factorization.

834004770985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166800954202.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 834004770985 in words is "eight hundred thirty-four billion, four million, seven hundred seventy thousand, nine hundred eighty-five".