20773256005 has 8 divisors (see below), whose sum is σ = 24928694424. Its totient is φ = 16618080000.

The previous prime is 20773255981. The next prime is 20773256039. The reversal of 20773256005 is 50065237702.

It can be written as a sum of positive squares in 4 ways, for example, as 596189889 + 20177066116 = 24417^2 + 142046^2 .

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

It is not a de Polignac number, because 20773256005 - 2¹³ = 20773247813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 228105 + ... + 305905.

It is an arithmetic number, because the mean of its divisors is an integer number (3116086803).

Almost surely, 2^20773256005 is an apocalyptic number.

It is an amenable number.

20773256005 is a deficient number, since it is larger than the sum of its proper divisors (4155438419).

20773256005 is an equidigital number, since it uses as much as digits as its factorization.

20773256005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131207.

The product of its (nonzero) digits is 88200, while the sum is 37.

The spelling of 20773256005 in words is "twenty billion, seven hundred seventy-three million, two hundred fifty-six thousand, five".