6511266705 has 16 divisors (see below), whose sum is σ = 10424548224. Its totient is φ = 3470501760.

The previous prime is 6511266689. The next prime is 6511266709. The reversal of 6511266705 is 5076621156.

6511266705 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6511266705 - 2⁴ = 6511266689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6511266709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110956 + ... + 159165.

It is an arithmetic number, because the mean of its divisors is an integer number (651534264).

Almost surely, 2^6511266705 is an apocalyptic number.

It is an amenable number.

6511266705 is a deficient number, since it is larger than the sum of its proper divisors (3913281519).

6511266705 is a wasteful number, since it uses less digits than its factorization.

6511266705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271736.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 6511266705 is about 80692.4203689541. The cubic root of 6511266705 is about 1867.3332406664. Note that the first 3 decimals are identical.

The spelling of 6511266705 in words is "six billion, five hundred eleven million, two hundred sixty-six thousand, seven hundred five".