20786660017752 has 32 divisors (see below), whose sum is σ = 51967287716400. Its totient is φ = 6928801649664.

The previous prime is 20786660017751. The next prime is 20786660017769. The reversal of 20786660017752 is 25771006668702.

It is a junction number, because it is equal to n+sod(n) for n = 20786660017692 and 20786660017701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20786660017751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3301773 + ... + 7243964.

Almost surely, 2^{20786660017752} is an apocalyptic number.

It is an amenable number.

20786660017752 is an abundant number, since it is smaller than the sum of its proper divisors (31180627698648).

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

20786660017752 is a wasteful number, since it uses less digits than its factorization.

20786660017752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10627875 (or 10627871 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 57.

The spelling of 20786660017752 in words is "twenty trillion, seven hundred eighty-six billion, six hundred sixty million, seventeen thousand, seven hundred fifty-two".