6515160881 has 2 divisors, whose sum is σ = 6515160882. Its totient is φ = 6515160880.

The previous prime is 6515160877. The next prime is 6515160893. The reversal of 6515160881 is 1880615156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4472934400 + 2042226481 = 66880^2 + 45191^2 .

It is a cyclic number.

It is not a de Polignac number, because 6515160881 - 2² = 6515160877 is a prime.

It is a super-2 number, since 2×6515160881² = 84894642610625392322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6515160811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3257580440 + 3257580441.

It is an arithmetic number, because the mean of its divisors is an integer number (3257580441).

Almost surely, 2^6515160881 is an apocalyptic number.

It is an amenable number.

6515160881 is a deficient number, since it is larger than the sum of its proper divisors (1).

6515160881 is an equidigital number, since it uses as much as digits as its factorization.

6515160881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 41.

The square root of 6515160881 is about 80716.5465130911. The cubic root of 6515160881 is about 1867.7054301568.

The spelling of 6515160881 in words is "six billion, five hundred fifteen million, one hundred sixty thousand, eight hundred eighty-one".