20061636028631 has 4 divisors (see below), whose sum is σ = 20061665822664. Its totient is φ = 20061606234600.

The previous prime is 20061636028601. The next prime is 20061636028669. The reversal of 20061636028631 is 13682063616002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20061636028631 - 2¹⁴ = 20061636012247 is a prime.

It is a super-2 number, since 2×20061636028631² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20061636028601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13863080 + ... + 15241661.

It is an arithmetic number, because the mean of its divisors is an integer number (5015416455666).

Almost surely, 2^{20061636028631} is an apocalyptic number.

20061636028631 is a deficient number, since it is larger than the sum of its proper divisors (29794033).

20061636028631 is an equidigital number, since it uses as much as digits as its factorization.

20061636028631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29794032.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 20061636028631 in words is "twenty trillion, sixty-one billion, six hundred thirty-six million, twenty-eight thousand, six hundred thirty-one".