138775275977 has 8 divisors (see below), whose sum is σ = 151342074240. Its totient is φ = 126478731600.

The previous prime is 138775275971. The next prime is 138775275979. The reversal of 138775275977 is 779572577831.

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

It is not a de Polignac number, because 138775275977 - 2⁶ = 138775275913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138775275971) 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, 67562399 + ... + 67564452.

It is an arithmetic number, because the mean of its divisors is an integer number (18917759280).

Almost surely, 2^138775275977 is an apocalyptic number.

It is an amenable number.

138775275977 is a deficient number, since it is larger than the sum of its proper divisors (12566798263).

138775275977 is a wasteful number, since it uses less digits than its factorization.

138775275977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135126943.

The product of its digits is 181515600, while the sum is 68.

The spelling of 138775275977 in words is "one hundred thirty-eight billion, seven hundred seventy-five million, two hundred seventy-five thousand, nine hundred seventy-seven".