12013537943170 has 16 divisors (see below), whose sum is σ = 21978866139768. Its totient is φ = 4726637879040.

The previous prime is 12013537943081. The next prime is 12013537943177. The reversal of 12013537943170 is 7134973531021.

It can be written as a sum of positive squares in 4 ways, for example, as 3543930496089 + 8469607447081 = 1882533^2 + 2910259^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12013537943170.

It is not an unprimeable number, because it can be changed into a prime (12013537943177) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9847161639 + ... + 9847162858.

Almost surely, 2^{12013537943170} is an apocalyptic number.

12013537943170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12013537943170 is a deficient number, since it is larger than the sum of its proper divisors (9965328196598).

12013537943170 is a wasteful number, since it uses less digits than its factorization.

12013537943170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19694324565.

The product of its (nonzero) digits is 476280, while the sum is 46.

The spelling of 12013537943170 in words is "twelve trillion, thirteen billion, five hundred thirty-seven million, nine hundred forty-three thousand, one hundred seventy".