138733545955 has 16 divisors (see below), whose sum is σ = 169943159808. Its totient is φ = 108698940000.

The previous prime is 138733545953. The next prime is 138733545971. The reversal of 138733545955 is 559545337831.

It is a happy number.

It is not a de Polignac number, because 138733545955 - 2¹ = 138733545953 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 138733545955.

It is not an unprimeable number, because it can be changed into a prime (138733545953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1240431 + ... + 1347640.

It is an arithmetic number, because the mean of its divisors is an integer number (10621447488).

Almost surely, 2^138733545955 is an apocalyptic number.

138733545955 is a deficient number, since it is larger than the sum of its proper divisors (31209613853).

138733545955 is a wasteful number, since it uses less digits than its factorization.

138733545955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588298.

The product of its digits is 34020000, while the sum is 58.

The spelling of 138733545955 in words is "one hundred thirty-eight billion, seven hundred thirty-three million, five hundred forty-five thousand, nine hundred fifty-five".