138205097106 has 16 divisors (see below), whose sum is σ = 276416031648. Its totient is φ = 46067392800.

The previous prime is 138205097099. The next prime is 138205097119. The reversal of 138205097106 is 601790502831.

138205097106 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102321 + ... + 535611.

It is an arithmetic number, because the mean of its divisors is an integer number (17276001978).

Almost surely, 2^138205097106 is an apocalyptic number.

138205097106 is an abundant number, since it is smaller than the sum of its proper divisors (138210934542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138205097106 is a wasteful number, since it uses less digits than its factorization.

138205097106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486457.

The product of its (nonzero) digits is 90720, while the sum is 42.

Adding to 138205097106 its reverse (601790502831), we get a palindrome (739995599937).

The spelling of 138205097106 in words is "one hundred thirty-eight billion, two hundred five million, ninety-seven thousand, one hundred six".