69386816442869 has 8 divisors (see below), whose sum is σ = 70023568659000. Its totient is φ = 68750067425472.

The previous prime is 69386816442851. The next prime is 69386816442883. The reversal of 69386816442869 is 96824461868396.

It can be written as a sum of positive squares in 4 ways, for example, as 46124879740900 + 23261936701969 = 6791530^2 + 4823063^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69386816442869 - 2¹² = 69386816438773 is a prime.

It is a super-2 number, since 2×69386816442869² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69386816442793 and 69386816442802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69386816442829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80934347 + ... + 81787175.

It is an arithmetic number, because the mean of its divisors is an integer number (8752946082375).

Almost surely, 2^{69386816442869} is an apocalyptic number.

It is an amenable number.

69386816442869 is a deficient number, since it is larger than the sum of its proper divisors (636752216131).

69386816442869 is a wasteful number, since it uses less digits than its factorization.

69386816442869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599367.

The product of its digits is 5159780352, while the sum is 80.

The spelling of 69386816442869 in words is "sixty-nine trillion, three hundred eighty-six billion, eight hundred sixteen million, four hundred forty-two thousand, eight hundred sixty-nine".