138755843417828 has 48 divisors (see below), whose sum is σ = 298859852062464. Its totient is φ = 54892217255040.

The previous prime is 138755843417783. The next prime is 138755843417929. The reversal of 138755843417828 is 828714348557831.

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, 130513118 + ... + 131571978.

It is an arithmetic number, because the mean of its divisors is an integer number (6226246917968).

Almost surely, 2^{138755843417828} is an apocalyptic number.

It is an amenable number.

138755843417828 is an abundant number, since it is smaller than the sum of its proper divisors (160104008644636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138755843417828 is a wasteful number, since it uses less digits than its factorization.

138755843417828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418892 (or 1418890 counting only the distinct ones).

The product of its digits is 1445068800, while the sum is 74.

The spelling of 138755843417828 in words is "one hundred thirty-eight trillion, seven hundred fifty-five billion, eight hundred forty-three million, four hundred seventeen thousand, eight hundred twenty-eight".