6511100961 has 16 divisors (see below), whose sum is σ = 8869791744. Its totient is φ = 4246647504.

The previous prime is 6511100957. The next prime is 6511100971. The reversal of 6511100961 is 1690011156.

It is not a de Polignac number, because 6511100961 - 2² = 6511100957 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6511100941) 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 15 ways as a sum of consecutive naturals, for example, 401370 + ... + 417276.

It is an arithmetic number, because the mean of its divisors is an integer number (554361984).

Almost surely, 2^6511100961 is an apocalyptic number.

It is an amenable number.

6511100961 is a deficient number, since it is larger than the sum of its proper divisors (2358690783).

6511100961 is a wasteful number, since it uses less digits than its factorization.

6511100961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18860.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 6511100961 is about 80691.3933514597. The cubic root of 6511100961 is about 1867.3173962375.

The spelling of 6511100961 in words is "six billion, five hundred eleven million, one hundred thousand, nine hundred sixty-one".