834951720961 has 16 divisors (see below), whose sum is σ = 901733797440. Its totient is φ = 770513402880.

The previous prime is 834951720959. The next prime is 834951721001. The reversal of 834951720961 is 169027159438.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 834951720961 - 2¹ = 834951720959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (834951720901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332560 + ... + 1334353.

It is an arithmetic number, because the mean of its divisors is an integer number (56358362340).

It is a 1-persistent number, because it is pandigital, but 2⋅834951720961 = 1669903441922 is not.

Almost surely, 2^834951720961 is an apocalyptic number.

It is an amenable number.

834951720961 is a deficient number, since it is larger than the sum of its proper divisors (66782076479).

834951720961 is a wasteful number, since it uses less digits than its factorization.

834951720961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667616.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 834951720961 in words is "eight hundred thirty-four billion, nine hundred fifty-one million, seven hundred twenty thousand, nine hundred sixty-one".