20680780727 has 8 divisors (see below), whose sum is σ = 21191947920. Its totient is φ = 20170987200.

The previous prime is 20680780699. The next prime is 20680780751. The reversal of 20680780727 is 72708708602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20680780727 - 2⁶ = 20680780663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20680780787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312902 + ... + 373187.

It is an arithmetic number, because the mean of its divisors is an integer number (2648993490).

Almost surely, 2^20680780727 is an apocalyptic number.

20680780727 is a deficient number, since it is larger than the sum of its proper divisors (511167193).

20680780727 is an equidigital number, since it uses as much as digits as its factorization.

20680780727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686833.

The product of its (nonzero) digits is 526848, while the sum is 47.

The spelling of 20680780727 in words is "twenty billion, six hundred eighty million, seven hundred eighty thousand, seven hundred twenty-seven".