2065521995 has 4 divisors (see below), whose sum is σ = 2478626400. Its totient is φ = 1652417592.

The previous prime is 2065521979. The next prime is 2065522001. The reversal of 2065521995 is 5991255602.

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

It is a cyclic number.

It is not a de Polignac number, because 2065521995 - 2⁴ = 2065521979 is a prime.

It is a super-2 number, since 2×2065521995² = 8532762223657560050, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 206552195 + ... + 206552204.

It is an arithmetic number, because the mean of its divisors is an integer number (619656600).

Almost surely, 2^2065521995 is an apocalyptic number.

2065521995 is a deficient number, since it is larger than the sum of its proper divisors (413104405).

2065521995 is an equidigital number, since it uses as much as digits as its factorization.

2065521995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413104404.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 2065521995 is about 45448.0142030430. The cubic root of 2065521995 is about 1273.5322327944.

The spelling of 2065521995 in words is "two billion, sixty-five million, five hundred twenty-one thousand, nine hundred ninety-five".