20344136235012 has 36 divisors (see below), whose sum is σ = 51428476199100. Its totient is φ = 6780980408832.

The previous prime is 20344136234971. The next prime is 20344136235091. The reversal of 20344136235012 is 21053263144302.

20344136235012 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 4 + 13 + 623 + 5 + 0 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14960696824836 + 5383439410176 = 3867906^2 + 2320224^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15975637 + ... + 17202012.

Almost surely, 2^{20344136235012} is an apocalyptic number.

It is an amenable number.

20344136235012 is an abundant number, since it is smaller than the sum of its proper divisors (31084339964088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20344136235012 is a wasteful number, since it uses less digits than its factorization.

20344136235012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33194692 (or 33194687 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 20344136235012 its reverse (21053263144302), we get a palindrome (41397399379314).

The spelling of 20344136235012 in words is "twenty trillion, three hundred forty-four billion, one hundred thirty-six million, two hundred thirty-five thousand, twelve".