6520095881 has 12 divisors (see below), whose sum is σ = 7193443788. Its totient is φ = 5904984384.

The previous prime is 6520095871. The next prime is 6520095919. The reversal of 6520095881 is 1885900256.

It can be written as a sum of positive squares in 6 ways, for example, as 59151481 + 6460944400 = 7691^2 + 80380^2 .

It is not a de Polignac number, because 6520095881 - 2⁶ = 6520095817 is a prime.

It is a super-2 number, since 2×6520095881² = 85023300594866332322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6520095811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 355010 + ... + 372923.

It is an arithmetic number, because the mean of its divisors is an integer number (599453649).

Almost surely, 2^6520095881 is an apocalyptic number.

It is an amenable number.

6520095881 is a deficient number, since it is larger than the sum of its proper divisors (673347907).

6520095881 is a wasteful number, since it uses less digits than its factorization.

6520095881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728012 (or 727999 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 44.

The square root of 6520095881 is about 80747.1106665743. The cubic root of 6520095881 is about 1868.1768843660.

The spelling of 6520095881 in words is "six billion, five hundred twenty million, ninety-five thousand, eight hundred eighty-one".