20766667683 has 8 divisors (see below), whose sum is σ = 27942917200. Its totient is φ = 13717431648.

The previous prime is 20766667651. The next prime is 20766667703. The reversal of 20766667683 is 38676666702.

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

It is not a de Polignac number, because 20766667683 - 2⁵ = 20766667651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20766665683) 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, 31752988 + ... + 31753641.

It is an arithmetic number, because the mean of its divisors is an integer number (3492864650).

Almost surely, 2^20766667683 is an apocalyptic number.

20766667683 is a deficient number, since it is larger than the sum of its proper divisors (7176249517).

20766667683 is a wasteful number, since it uses less digits than its factorization.

20766667683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63506741.

The product of its (nonzero) digits is 18289152, while the sum is 57.

The spelling of 20766667683 in words is "twenty billion, seven hundred sixty-six million, six hundred sixty-seven thousand, six hundred eighty-three".