69381256869 has 6 divisors (see below), whose sum is σ = 100217371046. Its totient is φ = 46254171240.

The previous prime is 69381256853. The next prime is 69381256877. The reversal of 69381256869 is 96865218396.

69381256869 is a `hidden beast` number, since 6 + 9 + 3 + 8 + 1 + 2 + 568 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 52601422500 + 16779834369 = 229350^2 + 129537^2 .

It is not a de Polignac number, because 69381256869 - 2⁴ = 69381256853 is a prime.

It is a super-2 number, since 2×69381256869² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69381256169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3854514262 + ... + 3854514279.

Almost surely, 2^69381256869 is an apocalyptic number.

It is an amenable number.

69381256869 is a deficient number, since it is larger than the sum of its proper divisors (30836114177).

69381256869 is a wasteful number, since it uses less digits than its factorization.

69381256869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7709028547 (or 7709028544 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 63.

The spelling of 69381256869 in words is "sixty-nine billion, three hundred eighty-one million, two hundred fifty-six thousand, eight hundred sixty-nine".