85683711829 has 2 divisors, whose sum is σ = 85683711830. Its totient is φ = 85683711828.

The previous prime is 85683711787. The next prime is 85683711859. The reversal of 85683711829 is 92811738658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67549049604 + 18134662225 = 259902^2 + 134665^2 .

It is a cyclic number.

It is not a de Polignac number, because 85683711829 - 2⁹ = 85683711317 is a prime.

It is a super-2 number, since 2×85683711829² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85683711859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42841855914 + 42841855915.

It is an arithmetic number, because the mean of its divisors is an integer number (42841855915).

Almost surely, 2^85683711829 is an apocalyptic number.

It is an amenable number.

85683711829 is a deficient number, since it is larger than the sum of its proper divisors (1).

85683711829 is an equidigital number, since it uses as much as digits as its factorization.

85683711829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 58.

The spelling of 85683711829 in words is "eighty-five billion, six hundred eighty-three million, seven hundred eleven thousand, eight hundred twenty-nine".