12738340040434 has 8 divisors (see below), whose sum is σ = 19189516542300. Its totient is φ = 6341834526336.

The previous prime is 12738340040401. The next prime is 12738340040467. The reversal of 12738340040434 is 43404004383721.

It is an interprime number because it is at equal distance from previous prime (12738340040401) and next prime (12738340040467).

It can be written as a sum of positive squares in 2 ways, for example, as 12009322909809 + 729017130625 = 3465447^2 + 853825^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13667746359 + ... + 13667747290.

Almost surely, 2^{12738340040434} is an apocalyptic number.

12738340040434 is a deficient number, since it is larger than the sum of its proper divisors (6451176501866).

12738340040434 is a wasteful number, since it uses less digits than its factorization.

12738340040434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27335493884.

The product of its (nonzero) digits is 774144, while the sum is 43.

The spelling of 12738340040434 in words is "twelve trillion, seven hundred thirty-eight billion, three hundred forty million, forty thousand, four hundred thirty-four".