138980557365 has 32 divisors (see below), whose sum is σ = 241671239040. Its totient is φ = 67793469696.

The previous prime is 138980557361. The next prime is 138980557399. The reversal of 138980557365 is 563755089831.

It is not a de Polignac number, because 138980557365 - 2² = 138980557361 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 138980557299 and 138980557308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138980557361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3248107 + ... + 3290616.

It is an arithmetic number, because the mean of its divisors is an integer number (7552226220).

Almost surely, 2^138980557365 is an apocalyptic number.

138980557365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138980557365 is a deficient number, since it is larger than the sum of its proper divisors (102690681675).

138980557365 is a wasteful number, since it uses less digits than its factorization.

138980557365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6538853.

The product of its (nonzero) digits is 27216000, while the sum is 60.

The spelling of 138980557365 in words is "one hundred thirty-eight billion, nine hundred eighty million, five hundred fifty-seven thousand, three hundred sixty-five".