20065771073 has 4 divisors (see below), whose sum is σ = 20118715440. Its totient is φ = 20012826708.

The previous prime is 20065771049. The next prime is 20065771081. The reversal of 20065771073 is 37017756002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20065771073 - 2¹⁴ = 20065754689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20065771093) 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, 26471615 + ... + 26472372.

It is an arithmetic number, because the mean of its divisors is an integer number (5029678860).

Almost surely, 2^20065771073 is an apocalyptic number.

It is an amenable number.

20065771073 is a deficient number, since it is larger than the sum of its proper divisors (52944367).

20065771073 is an equidigital number, since it uses as much as digits as its factorization.

20065771073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52944366.

The product of its (nonzero) digits is 61740, while the sum is 38.

The spelling of 20065771073 in words is "twenty billion, sixty-five million, seven hundred seventy-one thousand, seventy-three".