138390224815 has 16 divisors (see below), whose sum is σ = 167585816736. Its totient is φ = 109701043200.

The previous prime is 138390224807. The next prime is 138390224891. The reversal of 138390224815 is 518422093831.

It is not a de Polignac number, because 138390224815 - 2³ = 138390224807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2052235 + ... + 2118595.

It is an arithmetic number, because the mean of its divisors is an integer number (10474113546).

Almost surely, 2^138390224815 is an apocalyptic number.

138390224815 is a deficient number, since it is larger than the sum of its proper divisors (29195591921).

138390224815 is a wasteful number, since it uses less digits than its factorization.

138390224815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70170.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 138390224815 in words is "one hundred thirty-eight billion, three hundred ninety million, two hundred twenty-four thousand, eight hundred fifteen".