20256422727 has 8 divisors (see below), whose sum is σ = 27070088320. Its totient is φ = 13473519480.

The previous prime is 20256422723. The next prime is 20256422737. The reversal of 20256422727 is 72722465202.

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

It is not a de Polignac number, because 20256422727 - 2² = 20256422723 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 (20256422723) 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, 7689049 + ... + 7691682.

It is an arithmetic number, because the mean of its divisors is an integer number (3383761040).

Almost surely, 2^20256422727 is an apocalyptic number.

20256422727 is a deficient number, since it is larger than the sum of its proper divisors (6813665593).

20256422727 is a wasteful number, since it uses less digits than its factorization.

20256422727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15381173.

The product of its (nonzero) digits is 188160, while the sum is 39.

Adding to 20256422727 its reverse (72722465202), we get a palindrome (92978887929).

The spelling of 20256422727 in words is "twenty billion, two hundred fifty-six million, four hundred twenty-two thousand, seven hundred twenty-seven".