85788085291 has 2 divisors, whose sum is σ = 85788085292. Its totient is φ = 85788085290.

The previous prime is 85788085241. The next prime is 85788085343. The reversal of 85788085291 is 19258088758.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85788085291 is a prime.

It is not a weakly prime, because it can be changed into another prime (85788085241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42894042645 + 42894042646.

It is an arithmetic number, because the mean of its divisors is an integer number (42894042646).

Almost surely, 2^85788085291 is an apocalyptic number.

85788085291 is a deficient number, since it is larger than the sum of its proper divisors (1).

85788085291 is an equidigital number, since it uses as much as digits as its factorization.

85788085291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12902400, while the sum is 61.

The spelling of 85788085291 in words is "eighty-five billion, seven hundred eighty-eight million, eighty-five thousand, two hundred ninety-one".