20120342164612 has 24 divisors (see below), whose sum is σ = 37409210276760. Its totient is φ = 9450747855360.

The previous prime is 20120342164589. The next prime is 20120342164613. The reversal of 20120342164612 is 21646124302102.

It can be written as a sum of positive squares in 4 ways, for example, as 14532441876736 + 5587900287876 = 3812144^2 + 2363874^2 .

It is a super-2 number, since 2×20120342164612² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20120342164613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2343931189 + ... + 2343939772.

It is an arithmetic number, because the mean of its divisors is an integer number (1558717094865).

Almost surely, 2^{20120342164612} is an apocalyptic number.

It is an amenable number.

20120342164612 is a deficient number, since it is larger than the sum of its proper divisors (17288868112148).

20120342164612 is a wasteful number, since it uses less digits than its factorization.

20120342164612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687871031 (or 4687871029 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

Adding to 20120342164612 its reverse (21646124302102), we get a palindrome (41766466466714).

The spelling of 20120342164612 in words is "twenty trillion, one hundred twenty billion, three hundred forty-two million, one hundred sixty-four thousand, six hundred twelve".