85841378933 has 2 divisors, whose sum is σ = 85841378934. Its totient is φ = 85841378932.

The previous prime is 85841378867. The next prime is 85841378957. The reversal of 85841378933 is 33987314858.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71001997444 + 14839381489 = 266462^2 + 121817^2 .

It is a cyclic number.

It is not a de Polignac number, because 85841378933 - 2¹⁴ = 85841362549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85841378033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42920689466 + 42920689467.

It is an arithmetic number, because the mean of its divisors is an integer number (42920689467).

Almost surely, 2^85841378933 is an apocalyptic number.

It is an amenable number.

85841378933 is a deficient number, since it is larger than the sum of its proper divisors (1).

85841378933 is an equidigital number, since it uses as much as digits as its factorization.

85841378933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 59.

The spelling of 85841378933 in words is "eighty-five billion, eight hundred forty-one million, three hundred seventy-eight thousand, nine hundred thirty-three".