12071670785138 has 8 divisors (see below), whose sum is σ = 18107534775132. Its totient is φ = 6035825860096.

The previous prime is 12071670785089. The next prime is 12071670785203. The reversal of 12071670785138 is 83158707617021.

It can be written as a sum of positive squares in 2 ways, for example, as 11926199485489 + 145471299649 = 3453433^2 + 381407^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3061295 + ... + 5789202.

Almost surely, 2^{12071670785138} is an apocalyptic number.

12071670785138 is a deficient number, since it is larger than the sum of its proper divisors (6035863989994).

12071670785138 is an equidigital number, since it uses as much as digits as its factorization.

12071670785138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9532476.

The product of its (nonzero) digits is 3951360, while the sum is 56.

The spelling of 12071670785138 in words is "twelve trillion, seventy-one billion, six hundred seventy million, seven hundred eighty-five thousand, one hundred thirty-eight".