138992473033 has 4 divisors (see below), whose sum is σ = 139001320980. Its totient is φ = 138983625088.

The previous prime is 138992473031. The next prime is 138992473043. The reversal of 138992473033 is 330374299831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123603574329 + 15388898704 = 351573^2 + 124052^2 .

It is a cyclic number.

It is not a de Polignac number, because 138992473033 - 2¹ = 138992473031 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138992473031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4400368 + ... + 4431841.

It is an arithmetic number, because the mean of its divisors is an integer number (34750330245).

Almost surely, 2^138992473033 is an apocalyptic number.

It is an amenable number.

138992473033 is a deficient number, since it is larger than the sum of its proper divisors (8847947).

138992473033 is an equidigital number, since it uses as much as digits as its factorization.

138992473033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8847946.

The product of its (nonzero) digits is 2939328, while the sum is 52.

The spelling of 138992473033 in words is "one hundred thirty-eight billion, nine hundred ninety-two million, four hundred seventy-three thousand, thirty-three".