20136427206512 has 40 divisors (see below), whose sum is σ = 40418244054912. Its totient is φ = 9708257606400.

The previous prime is 20136427206499. The next prime is 20136427206551. The reversal of 20136427206512 is 21560272463102.

It is a super-2 number, since 2×20136427206512² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20136427206512.

It is a congruent number.

It is an unprimeable number.

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, 73143539 + ... + 73418322.

Almost surely, 2^{20136427206512} is an apocalyptic number.

It is an amenable number.

20136427206512 is an abundant number, since it is smaller than the sum of its proper divisors (20281816848400).

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

20136427206512 is a wasteful number, since it uses less digits than its factorization.

20136427206512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146562177 (or 146562171 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

Adding to 20136427206512 its reverse (21560272463102), we get a palindrome (41696699669614).

The spelling of 20136427206512 in words is "twenty trillion, one hundred thirty-six billion, four hundred twenty-seven million, two hundred six thousand, five hundred twelve".