138284180002 has 4 divisors (see below), whose sum is σ = 207426270006. Its totient is φ = 69142090000.

The previous prime is 138284179967. The next prime is 138284180051. The reversal of 138284180002 is 200081482831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200081482831 = 4549 ⋅43983619.

It can be written as a sum of positive squares in only one way, i.e., 138108113641 + 176066361 = 371629^2 + 13269^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34571044999 + ... + 34571045002.

Almost surely, 2^138284180002 is an apocalyptic number.

138284180002 is a deficient number, since it is larger than the sum of its proper divisors (69142090004).

138284180002 is an equidigital number, since it uses as much as digits as its factorization.

138284180002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69142090003.

The product of its (nonzero) digits is 24576, while the sum is 37.

The spelling of 138284180002 in words is "one hundred thirty-eight billion, two hundred eighty-four million, one hundred eighty thousand, two".