20165702132766 has 32 divisors (see below), whose sum is σ = 40450731598368. Its totient is φ = 6702027678720.

The previous prime is 20165702132743. The next prime is 20165702132767. The reversal of 20165702132766 is 66723120756102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20165702132767) 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 15 ways as a sum of consecutive naturals, for example, 3577606 + ... + 7289078.

It is an arithmetic number, because the mean of its divisors is an integer number (1264085362449).

Almost surely, 2^{20165702132766} is an apocalyptic number.

20165702132766 is an abundant number, since it is smaller than the sum of its proper divisors (20285029465602).

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

20165702132766 is a wasteful number, since it uses less digits than its factorization.

20165702132766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714156.

The product of its (nonzero) digits is 1270080, while the sum is 48.

Adding to 20165702132766 its reverse (66723120756102), we get a palindrome (86888822888868).

The spelling of 20165702132766 in words is "twenty trillion, one hundred sixty-five billion, seven hundred two million, one hundred thirty-two thousand, seven hundred sixty-six".