69688135444 has 6 divisors (see below), whose sum is σ = 121954237034. Its totient is φ = 34844067720.

The previous prime is 69688135441. The next prime is 69688135487. The reversal of 69688135444 is 44453188696.

It can be written as a sum of positive squares in only one way, i.e., 56083712400 + 13604423044 = 236820^2 + 116638^2 .

It is a super-2 number, since 2×69688135444² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69688135441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8711016927 + ... + 8711016934.

Almost surely, 2^69688135444 is an apocalyptic number.

It is an amenable number.

69688135444 is a deficient number, since it is larger than the sum of its proper divisors (52266101590).

69688135444 is a wasteful number, since it uses less digits than its factorization.

69688135444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17422033865 (or 17422033863 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 58.

The spelling of 69688135444 in words is "sixty-nine billion, six hundred eighty-eight million, one hundred thirty-five thousand, four hundred forty-four".