2065520765571 has 8 divisors (see below), whose sum is σ = 2873768021760. Its totient is φ = 1317143676552.

The previous prime is 2065520765527. The next prime is 2065520765573. The reversal of 2065520765571 is 1755670255602.

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

It is not a de Polignac number, because 2065520765571 - 2⁷ = 2065520765443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2065520765573) 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, 14967541711 + ... + 14967541848.

It is an arithmetic number, because the mean of its divisors is an integer number (359221002720).

Almost surely, 2^{2065520765571} is an apocalyptic number.

2065520765571 is a deficient number, since it is larger than the sum of its proper divisors (808247256189).

2065520765571 is a wasteful number, since it uses less digits than its factorization.

2065520765571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29935083585.

The product of its (nonzero) digits is 4410000, while the sum is 51.

The spelling of 2065520765571 in words is "two trillion, sixty-five billion, five hundred twenty million, seven hundred sixty-five thousand, five hundred seventy-one".