138770267217 has 32 divisors (see below), whose sum is σ = 193920030720. Its totient is φ = 88103051520.

The previous prime is 138770267213. The next prime is 138770267221. The reversal of 138770267217 is 712762077831.

It is an interprime number because it is at equal distance from previous prime (138770267213) and next prime (138770267221).

It is not a de Polignac number, because 138770267217 - 2² = 138770267213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138770267217.

It is not an unprimeable number, because it can be changed into a prime (138770267213) 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 31 ways as a sum of consecutive naturals, for example, 20962134 + ... + 20968752.

It is an arithmetic number, because the mean of its divisors is an integer number (6060000960).

Almost surely, 2^138770267217 is an apocalyptic number.

It is an amenable number.

138770267217 is a deficient number, since it is larger than the sum of its proper divisors (55149763503).

138770267217 is a wasteful number, since it uses less digits than its factorization.

138770267217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7933.

The product of its (nonzero) digits is 1382976, while the sum is 51.

The spelling of 138770267217 in words is "one hundred thirty-eight billion, seven hundred seventy million, two hundred sixty-seven thousand, two hundred seventeen".