20716026447 has 8 divisors (see below), whose sum is σ = 29246155056. Its totient is φ = 12998291072.

The previous prime is 20716026403. The next prime is 20716026449. The reversal of 20716026447 is 74462061702.

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 20716026447 - 2³⁴ = 3536157263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20716026449) 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 7 ways as a sum of consecutive naturals, for example, 203098248 + ... + 203098349.

It is an arithmetic number, because the mean of its divisors is an integer number (3655769382).

Almost surely, 2^20716026447 is an apocalyptic number.

20716026447 is a deficient number, since it is larger than the sum of its proper divisors (8530128609).

20716026447 is a wasteful number, since it uses less digits than its factorization.

20716026447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406196617.

The product of its (nonzero) digits is 112896, while the sum is 39.

The spelling of 20716026447 in words is "twenty billion, seven hundred sixteen million, twenty-six thousand, four hundred forty-seven".