138701670207 has 4 divisors (see below), whose sum is σ = 184935560280. Its totient is φ = 92467780136.

The previous prime is 138701670181. The next prime is 138701670227. The reversal of 138701670207 is 702076107831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138701670207 - 2⁶ = 138701670143 is a prime.

It is a super-2 number, since 2×138701670207² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138701670227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23116945032 + ... + 23116945037.

It is an arithmetic number, because the mean of its divisors is an integer number (46233890070).

Almost surely, 2^138701670207 is an apocalyptic number.

138701670207 is a deficient number, since it is larger than the sum of its proper divisors (46233890073).

138701670207 is an equidigital number, since it uses as much as digits as its factorization.

138701670207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46233890072.

The product of its (nonzero) digits is 98784, while the sum is 42.

The spelling of 138701670207 in words is "one hundred thirty-eight billion, seven hundred one million, six hundred seventy thousand, two hundred seven".