844866464851 has 2 divisors, whose sum is σ = 844866464852. Its totient is φ = 844866464850.

The previous prime is 844866464711. The next prime is 844866464881. The reversal of 844866464851 is 158464668448.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 844866464851 - 2⁹ = 844866464339 is a prime.

It is not a weakly prime, because it can be changed into another prime (844866464881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422433232425 + 422433232426.

It is an arithmetic number, because the mean of its divisors is an integer number (422433232426).

Almost surely, 2^844866464851 is an apocalyptic number.

844866464851 is a deficient number, since it is larger than the sum of its proper divisors (1).

844866464851 is an equidigital number, since it uses as much as digits as its factorization.

844866464851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141557760, while the sum is 64.

The spelling of 844866464851 in words is "eight hundred forty-four billion, eight hundred sixty-six million, four hundred sixty-four thousand, eight hundred fifty-one".