138306665852 has 48 divisors (see below), whose sum is σ = 251751188640. Its totient is φ = 66428854272.

The previous prime is 138306665821. The next prime is 138306665863. The reversal of 138306665852 is 258566603831.

138306665852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 138306665794 and 138306665803.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6003668 + ... + 6026660.

It is an arithmetic number, because the mean of its divisors is an integer number (5244816430).

Almost surely, 2^138306665852 is an apocalyptic number.

It is an amenable number.

138306665852 is a deficient number, since it is larger than the sum of its proper divisors (113444522788).

138306665852 is a wasteful number, since it uses less digits than its factorization.

138306665852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23550 (or 23548 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 53.

The spelling of 138306665852 in words is "one hundred thirty-eight billion, three hundred six million, six hundred sixty-five thousand, eight hundred fifty-two".