6511066160657 has 4 divisors (see below), whose sum is σ = 6512323371120. Its totient is φ = 6509808950196.

The previous prime is 6511066160623. The next prime is 6511066160671. The reversal of 6511066160657 is 7560616601156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6511066160657 - 2²⁰ = 6511065112081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6511066160257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628597463 + ... + 628607820.

It is an arithmetic number, because the mean of its divisors is an integer number (1628080842780).

Almost surely, 2^{6511066160657} is an apocalyptic number.

It is an amenable number.

6511066160657 is a deficient number, since it is larger than the sum of its proper divisors (1257210463).

6511066160657 is a wasteful number, since it uses less digits than its factorization.

6511066160657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257210462.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 6511066160657 in words is "six trillion, five hundred eleven billion, sixty-six million, one hundred sixty thousand, six hundred fifty-seven".