834287478691 has 4 divisors (see below), whose sum is σ = 834495378912. Its totient is φ = 834079578472.

The previous prime is 834287478671. The next prime is 834287478701. The reversal of 834287478691 is 196874782438.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196874782438 = 2 ⋅98437391219.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-834287478691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (834287478611) 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, 103944091 + ... + 103952116.

It is an arithmetic number, because the mean of its divisors is an integer number (208623844728).

Almost surely, 2^834287478691 is an apocalyptic number.

834287478691 is a deficient number, since it is larger than the sum of its proper divisors (207900221).

834287478691 is a wasteful number, since it uses less digits than its factorization.

834287478691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207900220.

The product of its digits is 130056192, while the sum is 67.

The spelling of 834287478691 in words is "eight hundred thirty-four billion, two hundred eighty-seven million, four hundred seventy-eight thousand, six hundred ninety-one".