4012685894069 has 2 divisors, whose sum is σ = 4012685894070. Its totient is φ = 4012685894068.

The previous prime is 4012685894051. The next prime is 4012685894081. The reversal of 4012685894069 is 9604985862104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3495815484100 + 516870409969 = 1869710^2 + 718937^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4012685894069 is a prime.

It is a super-2 number, since 2×4012685894069² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4012685894029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2006342947034 + 2006342947035.

It is an arithmetic number, because the mean of its divisors is an integer number (2006342947035).

Almost surely, 2^{4012685894069} is an apocalyptic number.

It is an amenable number.

4012685894069 is a deficient number, since it is larger than the sum of its proper divisors (1).

4012685894069 is an equidigital number, since it uses as much as digits as its factorization.

4012685894069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29859840, while the sum is 62.

The spelling of 4012685894069 in words is "four trillion, twelve billion, six hundred eighty-five million, eight hundred ninety-four thousand, sixty-nine".