138294236811 has 8 divisors (see below), whose sum is σ = 184403162944. Its totient is φ = 92190734280.

The previous prime is 138294236809. The next prime is 138294236867. The reversal of 138294236811 is 118632492831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138294236811 - 2¹ = 138294236809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138294231811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1296025 + ... + 1398666.

It is an arithmetic number, because the mean of its divisors is an integer number (23050395368).

Almost surely, 2^138294236811 is an apocalyptic number.

138294236811 is a deficient number, since it is larger than the sum of its proper divisors (46108926133).

138294236811 is a wasteful number, since it uses less digits than its factorization.

138294236811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2711801.

The product of its digits is 497664, while the sum is 48.

The spelling of 138294236811 in words is "one hundred thirty-eight billion, two hundred ninety-four million, two hundred thirty-six thousand, eight hundred eleven".