138954562834201 has 3 divisors (see below), whose sum is σ = 138954574622101. Its totient is φ = 138954551046302.

The previous prime is 138954562834177. The next prime is 138954562834211. The reversal of 138954562834201 is 102438265459831.

The square root of 138954562834201 is 11787899.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 138954562834201 - 2²⁹ = 138954025963289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138954562834201.

It is not an unprimeable number, because it can be changed into a prime (138954562834211) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5893950 + ... + 17681848.

Almost surely, 2^{138954562834201} is an apocalyptic number.

138954562834201 is the 11787899-th square number.

138954562834201 is the 5893950-th centered octagonal number.

It is an amenable number.

138954562834201 is a deficient number, since it is larger than the sum of its proper divisors (11787900).

138954562834201 is an frugal number, since it uses more digits than its factorization.

138954562834201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23575798 (or 11787899 counting only the distinct ones).

The product of its (nonzero) digits is 49766400, while the sum is 61.

The spelling of 138954562834201 in words is "one hundred thirty-eight trillion, nine hundred fifty-four billion, five hundred sixty-two million, eight hundred thirty-four thousand, two hundred one".