260286167991 has 4 divisors (see below), whose sum is σ = 347048223992. Its totient is φ = 173524111992.

The previous prime is 260286167909. The next prime is 260286168001. The reversal of 260286167991 is 199761682062.

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

It is not a de Polignac number, because 260286167991 - 2¹¹ = 260286165943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260286167191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43381027996 + ... + 43381028001.

It is an arithmetic number, because the mean of its divisors is an integer number (86762055998).

Almost surely, 2^260286167991 is an apocalyptic number.

260286167991 is a deficient number, since it is larger than the sum of its proper divisors (86762056001).

260286167991 is an equidigital number, since it uses as much as digits as its factorization.

260286167991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86762056000.

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 260286167991 in words is "two hundred sixty billion, two hundred eighty-six million, one hundred sixty-seven thousand, nine hundred ninety-one".