138705481883 has 4 divisors (see below), whose sum is σ = 141931190808. Its totient is φ = 135479772960.

The previous prime is 138705481841. The next prime is 138705481897. The reversal of 138705481883 is 388184507831.

138705481883 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 388184507831 = 23 ⋅16877587297.

It is a cyclic number.

It is not a de Polignac number, because 138705481883 - 2¹² = 138705477787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138705481283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1612854398 + ... + 1612854483.

It is an arithmetic number, because the mean of its divisors is an integer number (35482797702).

Almost surely, 2^138705481883 is an apocalyptic number.

138705481883 is a deficient number, since it is larger than the sum of its proper divisors (3225708925).

138705481883 is an equidigital number, since it uses as much as digits as its factorization.

138705481883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225708924.

The product of its (nonzero) digits is 5160960, while the sum is 56.

The spelling of 138705481883 in words is "one hundred thirty-eight billion, seven hundred five million, four hundred eighty-one thousand, eight hundred eighty-three".