20612647131412 has 36 divisors (see below), whose sum is σ = 42753185918100. Its totient is φ = 8667312536064.

The previous prime is 20612647131383. The next prime is 20612647131473. The reversal of 20612647131412 is 21413174621602.

It can be written as a sum of positive squares in 2 ways, for example, as 5045171853316 + 15567475278096 = 2246146^2 + 3945564^2 .

It is a super-2 number, since 2×20612647131412² (a number of 27 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 992127037 + ... + 992147812.

It is an arithmetic number, because the mean of its divisors is an integer number (1187588497725).

Almost surely, 2^{20612647131412} is an apocalyptic number.

It is an amenable number.

20612647131412 is an abundant number, since it is smaller than the sum of its proper divisors (22140538786688).

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

20612647131412 is a wasteful number, since it uses less digits than its factorization.

20612647131412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984274920 (or 1984274911 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 20612647131412 in words is "twenty trillion, six hundred twelve billion, six hundred forty-seven million, one hundred thirty-one thousand, four hundred twelve".