985277068891 has 2 divisors, whose sum is σ = 985277068892. Its totient is φ = 985277068890.

The previous prime is 985277068871. The next prime is 985277069053. The reversal of 985277068891 is 198860772589.

It is a weak prime.

It is an emirp because it is prime and its reverse (198860772589) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 985277068891 - 2¹⁵ = 985277036123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 985277068891.

It is not a weakly prime, because it can be changed into another prime (985277068871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492638534445 + 492638534446.

It is an arithmetic number, because the mean of its divisors is an integer number (492638534446).

Almost surely, 2^985277068891 is an apocalyptic number.

985277068891 is a deficient number, since it is larger than the sum of its proper divisors (1).

985277068891 is an equidigital number, since it uses as much as digits as its factorization.

985277068891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 121927680, while the sum is 70.

The spelling of 985277068891 in words is "nine hundred eighty-five billion, two hundred seventy-seven million, sixty-eight thousand, eight hundred ninety-one".