69190091869 has 2 divisors, whose sum is σ = 69190091870. Its totient is φ = 69190091868.

The previous prime is 69190091863. The next prime is 69190091891. The reversal of 69190091869 is 96819009196.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68663389369 + 526702500 = 262037^2 + 22950^2 .

It is a cyclic number.

It is not a de Polignac number, because 69190091869 - 2⁵ = 69190091837 is a prime.

It is a super-2 number, since 2×69190091869² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69190091863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34595045934 + 34595045935.

It is an arithmetic number, because the mean of its divisors is an integer number (34595045935).

Almost surely, 2^69190091869 is an apocalyptic number.

It is an amenable number.

69190091869 is a deficient number, since it is larger than the sum of its proper divisors (1).

69190091869 is an equidigital number, since it uses as much as digits as its factorization.

69190091869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1889568, while the sum is 58.

The spelling of 69190091869 in words is "sixty-nine billion, one hundred ninety million, ninety-one thousand, eight hundred sixty-nine".