138888856821147 has 8 divisors (see below), whose sum is σ = 185191224363600. Its totient is φ = 92589530246400.

The previous prime is 138888856821139. The next prime is 138888856821151. The reversal of 138888856821147 is 741128658888831.

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

It is not a de Polignac number, because 138888856821147 - 2³ = 138888856821139 is a prime.

It is a super-2 number, since 2×138888856821147² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138888856821137) 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, 760135354 + ... + 760318047.

It is an arithmetic number, because the mean of its divisors is an integer number (23148903045450).

Almost surely, 2^{138888856821147} is an apocalyptic number.

138888856821147 is a deficient number, since it is larger than the sum of its proper divisors (46302367542453).

138888856821147 is a wasteful number, since it uses less digits than its factorization.

138888856821147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520483853.

The product of its digits is 1321205760, while the sum is 78.

The spelling of 138888856821147 in words is "one hundred thirty-eight trillion, eight hundred eighty-eight billion, eight hundred fifty-six million, eight hundred twenty-one thousand, one hundred forty-seven".