138950447426 has 16 divisors (see below), whose sum is σ = 244638626496. Its totient is φ = 57940726896.

The previous prime is 138950447413. The next prime is 138950447459. The reversal of 138950447426 is 624744059831.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134121536 + ... + 134122571.

It is an arithmetic number, because the mean of its divisors is an integer number (15289914156).

It is a 1-persistent number, because it is pandigital, but 2⋅138950447426 = 277900894852 is not.

Almost surely, 2^138950447426 is an apocalyptic number.

138950447426 is a deficient number, since it is larger than the sum of its proper divisors (105688179070).

138950447426 is a wasteful number, since it uses less digits than its factorization.

138950447426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268244153.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 138950447426 in words is "one hundred thirty-eight billion, nine hundred fifty million, four hundred forty-seven thousand, four hundred twenty-six".