849624694861 has 2 divisors, whose sum is σ = 849624694862. Its totient is φ = 849624694860.

The previous prime is 849624694847. The next prime is 849624694871. The reversal of 849624694861 is 168496426948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 838083489961 + 11541204900 = 915469^2 + 107430^2 .

It is a cyclic number.

It is not a de Polignac number, because 849624694861 - 2¹⁵ = 849624662093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (849624694811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424812347430 + 424812347431.

It is an arithmetic number, because the mean of its divisors is an integer number (424812347431).

Almost surely, 2^849624694861 is an apocalyptic number.

It is an amenable number.

849624694861 is a deficient number, since it is larger than the sum of its proper divisors (1).

849624694861 is an equidigital number, since it uses as much as digits as its factorization.

849624694861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 143327232, while the sum is 67.

The spelling of 849624694861 in words is "eight hundred forty-nine billion, six hundred twenty-four million, six hundred ninety-four thousand, eight hundred sixty-one".