138577770266 has 8 divisors (see below), whose sum is σ = 223856398164. Its totient is φ = 63958970880.

The previous prime is 138577770263. The next prime is 138577770269. The reversal of 138577770266 is 662077775831.

138577770266 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138577770263) and next prime (138577770269).

It can be written as a sum of positive squares in 2 ways, for example, as 137959502041 + 618268225 = 371429^2 + 24865^2 .

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

It is not an unprimeable number, because it can be changed into a prime (138577770263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2664957095 + ... + 2664957146.

Almost surely, 2^138577770266 is an apocalyptic number.

138577770266 is a deficient number, since it is larger than the sum of its proper divisors (85278627898).

138577770266 is a wasteful number, since it uses less digits than its factorization.

138577770266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5329914256.

The product of its (nonzero) digits is 20744640, while the sum is 59.

The spelling of 138577770266 in words is "one hundred thirty-eight billion, five hundred seventy-seven million, seven hundred seventy thousand, two hundred sixty-six".