138847644807 has 8 divisors (see below), whose sum is σ = 185146227840. Its totient is φ = 92557079160.

The previous prime is 138847644781. The next prime is 138847644847. The reversal of 138847644807 is 708446748831.

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

It is not a de Polignac number, because 138847644807 - 2¹⁹ = 138847120519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138847644847) 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, 1963819 + ... + 2033292.

It is an arithmetic number, because the mean of its divisors is an integer number (23143278480).

Almost surely, 2^138847644807 is an apocalyptic number.

138847644807 is a deficient number, since it is larger than the sum of its proper divisors (46298583033).

138847644807 is a wasteful number, since it uses less digits than its factorization.

138847644807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008693.

The product of its (nonzero) digits is 28901376, while the sum is 60.

The spelling of 138847644807 in words is "one hundred thirty-eight billion, eight hundred forty-seven million, six hundred forty-four thousand, eight hundred seven".