20773962305 has 4 divisors (see below), whose sum is σ = 24928754772. Its totient is φ = 16619169840.

The previous prime is 20773962301. The next prime is 20773962359. The reversal of 20773962305 is 50326937702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11050424641 + 9723537664 = 105121^2 + 98608^2 .

It is not a de Polignac number, because 20773962305 - 2² = 20773962301 is a prime.

It is a super-3 number, since 3×20773962305³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20773962301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2077396226 + ... + 2077396235.

It is an arithmetic number, because the mean of its divisors is an integer number (6232188693).

Almost surely, 2^20773962305 is an apocalyptic number.

It is an amenable number.

20773962305 is a deficient number, since it is larger than the sum of its proper divisors (4154792467).

20773962305 is an equidigital number, since it uses as much as digits as its factorization.

20773962305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154792466.

The product of its (nonzero) digits is 476280, while the sum is 44.

The spelling of 20773962305 in words is "twenty billion, seven hundred seventy-three million, nine hundred sixty-two thousand, three hundred five".