6461768911 has 12 divisors (see below), whose sum is σ = 7186180152. Its totient is φ = 5803495776.

The previous prime is 6461768903. The next prime is 6461768927. The reversal of 6461768911 is 1198671646.

It is not a de Polignac number, because 6461768911 - 2³ = 6461768903 is a prime.

It is a super-2 number, since 2×6461768911² = 83508914918332251842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6461738911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 510441 + ... + 522946.

It is an arithmetic number, because the mean of its divisors is an integer number (598848346).

Almost surely, 2^6461768911 is an apocalyptic number.

6461768911 is a deficient number, since it is larger than the sum of its proper divisors (724411241).

6461768911 is a wasteful number, since it uses less digits than its factorization.

6461768911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033450 (or 1033437 counting only the distinct ones).

The product of its digits is 435456, while the sum is 49.

The square root of 6461768911 is about 80385.1286681809. The cubic root of 6461768911 is about 1862.5894590966.

The spelling of 6461768911 in words is "six billion, four hundred sixty-one million, seven hundred sixty-eight thousand, nine hundred eleven".