138228620969 has 8 divisors (see below), whose sum is σ = 140219107200. Its totient is φ = 136240754976.

The previous prime is 138228620953. The next prime is 138228620993. The reversal of 138228620969 is 969026822831.

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

It is not a de Polignac number, because 138228620969 - 2⁴ = 138228620953 is a prime.

It is a super-2 number, since 2×138228620969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (138228622969) 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 in 7 ways as a sum of consecutive naturals, for example, 548669 + ... + 759930.

It is an arithmetic number, because the mean of its divisors is an integer number (17527388400).

Almost surely, 2^138228620969 is an apocalyptic number.

It is an amenable number.

138228620969 is a deficient number, since it is larger than the sum of its proper divisors (1990486231).

138228620969 is a wasteful number, since it uses less digits than its factorization.

138228620969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310119.

The product of its (nonzero) digits is 4478976, while the sum is 56.

The spelling of 138228620969 in words is "one hundred thirty-eight billion, two hundred twenty-eight million, six hundred twenty thousand, nine hundred sixty-nine".